PHP 8.3.4 Released!

imap_open

(PHP 4, PHP 5, PHP 7, PHP 8)

imap_openOuvre un flux IMAP vers une boîte aux lettres

Description

imap_open(
    string $mailbox,
    string $user,
    string $password,
    int $flags = 0,
    int $retries = 0,
    array $options = []
): IMAP\Connection|false

Ouvre un flux IMAP vers la boîte aux lettres mailbox.

Cette fonction peut aussi être utilisée pour ouvrir des flots sur des serveurs POP3 et NNTP mais quelques fonctions et fonctionnalités ne sont disponibles qu'avec les serveurs IMAP.

Liste de paramètres

mailbox

Un nom de boîte aux lettres est constitué d'une adresse de serveur, et d'une adresse de boîte sur ce serveur. Le mot réservé INBOX représente la boîte aux lettres de l'utilisateur courant. Les noms de boîtes aux lettres qui contiennent des caractères spéciaux (en dehors de l'espace ASCII) doivent être encodés avec imap_utf7_encode().

Avertissement

Passer des données qui ne sont pas digne de confiance à ce paramètre est dangereux, sauf si, imap.enable_insecure_rsh est désactivé.

L'adresse du serveur, mise entre accolades '{' et '}', est constituée du nom du serveur ou de son adresse IP, d'une spécification de protocole (commençant par '/') et d'un port optionnel (spécifié avec ':').

Cette partie est obligatoire dans les paramètres de la boîte aux lettres.

Tous les noms commençant par { sont des noms distants et sont sous la forme "{" nom_systeme_distant [":" port] [flags] "}" [nom_mailbox] où :

  • remote_system_name : Nom de domaine Internet ou une adresse IP de serveur entouré de guillemets.
  • port : numéro de port TCP (optionnel), la valeur par défaut est la valeur du port pour ce service.
  • flags : options, voir la table suivante.
  • mailbox_name : nom de la mailbox distante, par défaut : INBOX

Flags optionnels pour les noms
Flag Description
/service=service service pour l'accès à la mailbox, par défaut : "imap"
/user=user nom de l'utilisateur distant pour l'identification sur le serveur
/authuser=user utilisateur distance d'identification ; si spécifié, ce sera le nom de l'utilisateur dont le mot de passe est utilisé (e.g. administrator)
/anonymous accès distant en anonyme
/debug la télémétrie d'enregistrement du protocole dans les logs de déboguage de l'application
/secure ne transmet pas un mot de passe en clair à travers le réseau
/imap, /imap2, /imap2bis, /imap4, /imap4rev1 équivalent de /service=imap
/pop3 équivalent de /service=pop3
/nntp équivalent de /service=nntp
/norsh ne pas utiliser rsh ou ssh pour établir une session de pré identification IMAP
/ssl utilise Secure Socket Layer pour crypter la session
/validate-cert valide les certificats depuis le serveur TLS/SSL (c'est le comportement par défaut)
/novalidate-cert ne pas valider les certificats depuis le serveur TLS/SSL, nécessaire si le serveur utilise des certificats autosignés
/tls force l'utilisation de start-TLS pour chiffrer la session et rejette les connexions aux serveurs qui ne le supporte pas
/notls n'utilise pas start-TLS pour chiffrer la session, y compris avec les serveurs qui le supporte
/readonly demande un accès en lecture seule sur mailbox (IMAP uniquement ; ignoré sous NNTP, et une erreur avec SMTP et POP3)

user

Le nom d'utilisateur

password

Le mot de passe associé avec l'utilisateur user

flags

flags est un masque de bit, qui peut prendre une ou plusieurs des valeurs suivantes :

  • OP_READONLY : Ouvre une boîte aux lettres en lecture seule
  • OP_ANONYMOUS : Ne pas utiliser, ou modifier le fichier .newsrc pour les news (NNTP uniquement)
  • OP_HALFOPEN : Pour les noms IMAP et NNTP, ouvre une connexion mais n'ouvre pas une boîte aux lettres.
  • CL_EXPUNGE : Supprime automatiquement la boîte aux lettres de la liste, lors de la terminaison du flux (voir aussi imap_delete() and imap_expunge())
  • OP_DEBUG : négociations de débogage du protocole
  • OP_SHORTCACHE : Cache court (elt uniquement)
  • OP_SILENT : Ne pas transmettre les événements (utilisation interne)
  • OP_PROTOTYPE : Retourne le prototype du driver
  • OP_SECURE : Ne pas effectuer des identifications non sécurisées

retries

Le nombre maximal de tentatives de connexion.

options

Paramètres de connexion ; les clés peuvent être utilisées pour définir un ou plusieurs paramètres de connexion :

  • DISABLE_AUTHENTICATOR - Désactive les propriétés d'authentification

Valeurs de retour

Retourne une instance de IMAP\Connection en cas de succès, ou false si une erreur survient.

Historique

Version Description
8.1.0 Retourne désormais une instance de IMAP\Connection ; auparavant, une ressource était retournée.

Exemples

Exemple #1 Différentes utilisations de imap_open()

<?php
// Pour se connecter à un serveur IMAP fonctionnant sur le port 143 de la
// machine locale, faites ceci :
$mbox = imap_open("{localhost:143}INBOX", "user_id", "password");

// Pour se connecter à un serveur POP3 fonctionnant sur le port 110 du
// serveur local, faites ceci :
$mbox = imap_open ("{localhost:110/pop3}INBOX", "user_id", "password");

// Pour se connecter à un serveur SSL IMAP ou POP3, ajoutez /ssl
// après la spécification du protocole :
$mbox = imap_open ("{localhost:993/imap/ssl}INBOX", "user_id", "password");

// Pour se connecter à un serveur SSL IMAP ou POP3 avec un certificat autosigné
// ajoutez /ssl/novalidate-cert après le protocole :
$mbox = imap_open ("{localhost:995/pop3/ssl/novalidate-cert}", "user_id", "password");

// Pour se connecter à un serveur NNTP qui fonctionne sur
// le port 119 de la machine locale on peut utiliser la commande:
$nntp = imap_open ("{localhost:119/nntp}comp.test", "", "");

// Pour se connecter à un serveur distant, remplacez "localhost" par
// le nom ou l'adresse IP de la machine.
?>

Exemple #2 Exemple avec imap_open()

<?php
$mbox
= imap_open("{imap.example.org:143}", "username", "password");

echo
"<h1>Mailboxes</h1>\n";
$folders = imap_listmailbox($mbox, "{imap.example.org:143}", "*");

if (
$folders == false) {
echo
"Appel échoué<br />\n";
} else {
foreach (
$folders as $val) {
echo
$val . "<br />\n";
}
}

echo
"<h1>en-têtes dans INBOX</h1>\n";
$headers = imap_headers($mbox);

if (
$headers == false) {
echo
"Appel échoué<br />\n";
} else {
foreach (
$headers as $val) {
echo
$val . "<br />\n";
}
}

imap_close($mbox);
?>

Voir aussi

add a note

User Contributed Notes 40 notes

up
28
php at dsgvoseidank dot de
1 year ago
Google dropped the support of user/password authentication as of 30 may 2022.
imap_open can not be used anymore, without the support of xoauth2.
https://support.google.com/accounts/answer/6010255

There is a ToDo from 2020 that didn't make it.
https://wiki.php.net/todo/ext/imap/xoauth2

The only way is to switch to a third party lib. "php-imap"
This is so sad.
up
6
neekToO
1 year ago
To reply to "dsgvoseidank" saying it doesnt work anymore with Gmail :

As today 26 august 2022 it is still working but you need to use google parameters to generate a password for your app on a 2FA account
up
12
kay at rrr dot de
14 years ago
imap_open is very simple to use, but struggles a litte bit on setups with ssl and tls.

this are tested examples for different hosts and protocols.

uncomment the host/protocol line and fill in correct username and password.

Kay

<?php

#######
# localhost pop3 with and without ssl
# $authhost="{localhost:995/pop3/ssl/novalidate-cert}";
# $authhost="{localhost:110/pop3/notls}";

# localhost imap with and without ssl
# $authhost="{localhost:993/imap/ssl/novalidate-cert}";
# $authhost="{localhost:143/imap/notls}";
# $user="localuser";

# localhost nntp with and without ssl
# you have to specify an existing group, control.cancel should exist
# $authhost="{localhost:563/nntp/ssl/novalidate-cert}control.cancel";
# $authhost="{localhost:119/nntp/notls}control.cancel";

######
# web.de pop3 without ssl
# $authhost="{pop3.web.de:110/pop3/notls}";
# $user="kay.marquardt@web.de";

#########
# goggle with pop3 or imap
# $authhost="{pop.gmail.com:995/pop3/ssl/novalidate-cert}";
# $authhost="{imap.gmail.com:993/imap/ssl/novalidate-cert}";
# $user="username@gmail.com";

$user="username like above";
$pass="yourpass";

if (
$mbox=imap_open( $authhost, $user, $pass ))
{
echo
"<h1>Connected</h1>\n";
imap_close($mbox);
} else
{
echo
"<h1>FAIL!</h1>\n";
}

?>
up
12
jeff at newscloud dot com
10 years ago
One of the issues with gmail IMAP SSL authentication is related to Google's account security.

Once you get the login error once, sign out of all your google accounts. Then, visit this link:
http://www.google.com/accounts/DisplayUnlockCaptcha

Log in with the account you're attempting to access via imap.

Follow the steps and you'll then be able to login in to gmail with php imap.

It's visually shown here:
http://jeffreifman.com/filtered-open-source-imap-mail-filtering-software-for-php/configuring-gmail/
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13
guilherme dot geronimo at gmail dot com
13 years ago
Using:
<?php
imap_open
( "{server.example.com:143}INBOX" , 'login' , 'password' );
?>

Got this error:
"Couldn't open stream {server.example.com:143}INBOX"

Solved by adding the flag "novalidate-cert":
<?php
imap_open
( "{server.example.com:143/novalidate-cert}INBOX" , 'login' , 'password' );
?>

=D
up
6
hashampel at yahoo dot de
9 years ago
Subfolders of INBOX have to be seperate by dot like this: 'INBOX.test'
$mailbox = '{example.example.com:143/imap/novalidate-cert}INBOX.test'
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4
dominic_mayers at yahoo dot com
7 years ago
This code demonstrates features that are not well documented at this time. The main feature is that the selected mailbox in imap_open (or reopen) and the specified mailbox in other imap functions are unrelated. It has been tested with Gmail and with a Dovecot IMAP server. The mailbox separator depends on the server. Gmail: "/" Dovecot: "." If you want to test with Gmail, you need to turn on "Access for less secure apps" in your account.

<?php
// Change these.
$server = "{imap.gmail.com:993/imap/ssl/novalidate-cert}";
$email = "example@gmail.com";
$password = "password";

// The code assumes that the folders Test/Sub1/Sub11, etc. exist.
$selected = "{$server}Test/Sub1/Sub12";
$conn = imap_open($selected, $email , $password);

// This returns the $specified mailbox and its sub mailboxes,
// even if the $specified mailbox is outside the $selected mailbox.
$specified = "{$server}Test/Sub1";
$boxes = imap_list($conn, $specified , '*');
print_r($boxes);

// This appends the message in the $specified mailbox.
// It ignores the $selected mailbox.
imap_append($conn, $specified
, "From: me@example.com\r\n"
. "To: you@example.com\r\n"
. "Subject: test\r\n"
. "\r\n"
. "this is a test message, please ignore\r\n");

// This changes the $selected mailbox
$selected = "{$server}Test/Sub1";
imap_reopen($conn, $selected);

// This moves a message from the $selected to the $specified mailbox
// In this case, the specified mailbox does not include the server.
imap_mail_move ($conn , "1" , "Test");
imap_expunge($conn);
imap_close($conn);
// If you executed this code with a real IMAP server,
// the message is now in the Test mailbox !
?>
up
1
LANGE.LUDO
5 years ago
If you get Kerberos errors like:
« Notice: Unknown: Kerberos error: Credentials cache file '/tmp/krb5cc_0123' not found (try running kinit) ».

Try to add as a $param:
<?php array('DISABLE_AUTHENTICATOR' => 'GSSAPI') ?>

eg.
<?php
$imap_stream
= imap_open('{mail.domain.tld:993/imap/ssl}' , 'username' , 'password', null, 1, array('DISABLE_AUTHENTICATOR' => 'GSSAPI'));
?>
up
4
Amit
17 years ago
None of the above comments explain the configuration issues on Apache/Windows combination. I thought it might be helpful to list my findings here so that Windows people's time is saved.

There is a bug in Windows php_imap.dll that prevents it from connecting it to the SSL IMAP/POP3 server.

http://bugs.php.net/bug.php?id=36496&edit=1
up
5
Martin Eckardt
12 years ago
Since Version 5.3.2 there's a 6th parameter available to disable authentication with GSSAPI or NTLM:

Example:
<?php
$mbox
= imap_open("{w2010ExchangeServer:993/imap/ssl}", $user, $password, NULL, 1, array('DISABLE_AUTHENTICATOR' => 'GSSAPI'));
?>

This solves the problem with Exchange 2010 for me. As a reference see https://bugs.php.net/bug.php?id=33500
up
1
Lisboa
9 years ago
The error: Unknown: Mailbox is empty (errflg=1) in Unknown on line 0
appears when:

1) use imap_open to connect
2) then use imap_search ALL to retrieve emails

but there are no messages available. To avoid this error, check first the number of messages in a mailbox using imap_status. Only if there are messages available then you can use the imap_search.
up
2
liamr at umich dot edu
19 years ago
To authenticate using kerberos V / GSSAPI, you might need to add "user=" to the connection string.. eg:

$mbox = imap_open( "\{imap.example.com:143/imap/notls/user=" . $user . "}INBOX", $user, $passwd );

Our IMAP servers won't allow a user other than the user specified in the kerberos credentials connect using those credentials unless you specify that extra "user=" in the connection string. Passing it as an argument to imap_open() doesn't seem to be enough.
up
2
shaikh_zaid at yahoo dot com
17 years ago
imap_open will not open a stream if your server operates with Transport Layer Security (i.e. TLS) imap_open connects with SSL if its there. So try opening mailbox as

$mailbox="{mail.domain.com:143/imap/notls}";
or
$mailbox="{mail.domain.com:110/pop3/notls}"; This works...

Some mail server requires you to provide username@domain.com so you can always use. user@doamin.com

$conn=imap_open($mailbox, $username, $password);

Some server may ask for username as "user=user@domain.com"

:)
up
2
rvarkelen AT hortimax.nl
20 years ago
In order to make a IMAP connection to a Microsoft Exchange Server 5.5, I used this connection-string :

<?php
if(imap_open ("{192.168.1.6:143/imap}Inbox", "DOMAIN/USERNAME/ALIAS", "PASSWORD"))
{
echo
'Connection success!';
}
else
{
echo
'Connection failed';
}
?>

By replacing "Inbox" with, e.g. "Tasks", its possible to see all your tasks. I Hope this helps anybody!

Regards
up
2
me at achronos dot ca
9 years ago
Do not bother using "/debug" flag in $mailbox or OP_DEBUG in $options. They do not do anything.

When you set either one, the underlying IMAP c-client library will gather protocol debugging data and pass it back to PHP.
However, the debug handler defined by PHP is an empty function, it doesn't do anything.

So unless you're using a customized version of the IMAP extension that does something with that handler (mm_dlog), there is no point using "/debug" or OP_DEBUG.
up
3
frederik at roal dot no
21 years ago
For all imap functions where you specify the mailbox string it is important that you ALWAYS use IP (not hostname) and the portnumber. If you do not do this imap functions will be painfully slow.
Using hostname instead of IP adds 3 seconds to each IMAP call, not using portnumber adds 10 seconds to each imap call. (hint: use gethostbyname() )
up
1
mightycpa
14 years ago
My script kept on timing out, even though the syntax was spot on... ultimately, I figured out that the port was blocked by my webhost, where I ran this on a shared server...

I post this just in case you miss this obvious, like I did.
up
1
avizion at relay dot dk
18 years ago
For FreeBSD users...

If you want to have SSL support, you want to install the ports:

mail/php5-imap
security/php5-openssl

Cheers :)

- avizion
up
2
brojann at netscape dot com
22 years ago
You can do

<? $foo = imap_errors(); ?>

to clear unwanted warning messages like 'Mailbox is empty'
up
1
Anonymous
6 years ago
Function to test most of the possible options of a connection:

function imapConfig($options, $i=0, $till = array()) {
if(sizeof($options)==$i)
return $till;

if(sizeof($till)==0)
$till[] = '';

$opt = $options[$i];
$new = array();
foreach($till as $t) {
foreach($opt as $o) {
if(strlen($o)==0)
$new[] = $t;
else
$new[] = $t.'/'.$o;
}
}
return imapConfig($options, $i+1, $new);
}

function imap_test($server, $port, $dir, $username, $passw) {
$options = array();
//$options[] = array('debug');
$options[] = array('imap', 'imap2', 'imap2bis', 'imap4', 'imap4rev1', 'pop3'); //nntp
$options[] = array('', 'norsh');
$options[] = array('', 'ssl');
$options[] = array('', 'validate-cert', 'novalidate-cert');
$options[] = array('', 'tls', 'notls');

$configOptions = imapConfig($options);
foreach($configOptions as $c) {
$mbox = @imap_open("{".$server.":".$port.$c."}".$dir, $username, $passw);
echo "<b>{".$server.":".$port.$c."}".$dir."</b> ... ";
if (false !== $mbox) {
echo '<span style="color: green"> success</span>';
}
else {
echo '<span style="color: red"> failed</span>';
}
echo '<br>';
}
}

imap_test('mail.server.de', 143, 'INBOX', 'username', 'pwd');
up
1
m dot stoel at cyberkinetic dot nl
18 years ago
a little tip for those who get really frustrated even after reading all the right solutions and implementing them but still get the same errors or none at all..:
after having changed the code.. restart the httpd deamon..

for Fedora or any other Red Hat Linux OS (/etc/init.d/httpd restart).

After this you will be able to make a imap/pop3 stream from apache..
up
1
kaper at nexgc dot com
20 years ago
I had been having lots of trouble trying to get imap_open to connect to an imap server. Then I found another post online that suggested this and it worked, so I am going to post it here. I hope this helps others..

"I have tried with the following strings instead and it works:

for pop3: {www.server.com:110/pop3/notls}INBOX

and for imap: {www.server.com:143/notls}INBOX.
up
0
Stefano
1 year ago
``There is one thing I learned over the years,
if someone says: "it's not possible", prove them wrong.`` ~ Stefano Kocka '99

test date: 2022-11-20
php version: PHP 8.0.10 (cli)
extension=imap
extension=openssl

imap: IMAP c-Client Version => 2007f
SSL Support => enabled

https://support.google.com/accounts/answer/185833?hl=en

<?php
$cnx
= '{imap.gmail.com:993/imap/ssl/readonly}';
$mbox = imap_open($cnx, 'user@gmail.com', 'MyAppPassword');
$folders = imap_listmailbox($mbox, $cnx, '*');
print_r($folders);
/*
Array
(
[0] => {imap.gmail.com:993/imap/ssl/readonly}INBOX
[1] => {imap.gmail.com:993/imap/ssl/readonly}LABEL1
[2] => {imap.gmail.com:993/imap/ssl/readonly}LABEL2
[3] => {imap.gmail.com:993/imap/ssl/readonly}Queue
[4] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/All
[5] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/Drafts
[6] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/Sent
[7] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/Spam
[8] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/Starred
[9] => {imap.gmail.com:993/imap/ssl/readonly}[Gmail]/Trash
)
*/
?>
Kind regards
up
0
Ap.Muthu
8 years ago
An old archived 2006 PHP script to retrieve IMAP POP3 email into a MySQL database and as files is at:
http://web.archive.org/web/20060411020022/http://www.sellchain.com/phPOP3/phPOP3.txt
up
0
egoman69 at hotmail
13 years ago
"Couldn't open stream {127.0.0.1:143/imap/notls}INBOX"

Solved by only replacing 127.0.0.1 with localhost, php and IMAP server both in same machine, not through Proxy or anything. Weird!
up
-1
askalski at synacor dot com
16 years ago
By default, imap_open() will retry an incorrect password 3 times before giving up. This is a feature built into the c-client library intended for interactive mail clients (which can prompt the end user for a new username/password combo.)

The new optional parameter "$n_retries" allows PHP to override the default retry limit. There is absolutely no reason to leave this at default, or to set it to any value other than 1. This is especially important if the mail server you're using locks users out after too many login failures.
up
-1
itstooloud
16 years ago
Works with Gmail's new IMAP function for personal and for Google Apps.

$mbox = imap_open ("{imap.gmail.com:993/imap/ssl}INBOX", "username@gmail.com", "password")
or die("can't connect: " . imap_last_error());
up
-1
david at brayworth dot com dot au
12 years ago
I managed to use this function against Exchange 2010 without recompiling to disable kerberos

It's important to me that php installs per the standard package (yum install php)

Exchange 2010 triggers kerberos in php, and you require the kinit thing (search around google for "imap_open kinit exchange 2010" and you will find this)

To get it working I had to:
1. setup the krb5.conf file correctly
2. do a kinit username@DOMAIN.DOM with a valid username / password
3. rename the ticket file to reflect the user id of apache (usually 48)
/tmp/krb5cc_48
4. fix ownership
chown apache.apache /tmp/krb5cc_48

but the exchange server will use the kerberos ticket and not the username password - unless you use ssl

<?php

$imap_user
= "username";
$imap_pass = "password";
$imap_server = "{w2010kExchangeServer:993/novalidate-cert/ssl}";

$mbox = imap_open("{$imap_server}INBOX", $imap_user, $imap_pass);

$sorted_mbox = imap_sort($mbox, SORTDATE, 0);
$totalrows = imap_num_msg($mbox);
print
"$imap_server\n";

$startvalue = 0;
while (
$startvalue < $totalrows) {

$headers = imap_fetchheader($mbox, $sorted_mbox[ $startvalue ] );
$subject = array();
preg_match_all('/^Subject: (.*)/m', $headers, $subject);
print
$subject[1][0] . "\n";

$startvalue++;
}
?>

One small step for php / exchange, one Giant leap for David ....
up
-1
Tim
8 years ago
Hi

I was struggling with the Gmail Imap/pop connection. It keeps saying too many failed login connections were made.

Thing I did:
https://www.google.com/settings/security/lesssecureapps
Clicked "Turn on"
> worked!

So last step could be used but remember your account will be at a certain security risk. Anyway it comes in handy to develop...
up
-2
jeff1326
12 years ago
If your connection is too slow, try it with port and without domain.

<?php
//Normal connection
$mailbox = imap_open("{SERVER}INBOX", $username, $password);

//Faster connection
$mailbox = imap_open("{SERVER:143}INBOX", $username, $password);

//Very slow connection
$mailbox = imap_open ("{SERVER.DOMAIN}INBOX", "DOMAIN/".$username, $password);
?>
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-1
bandpay at hotmail dot com
23 years ago
I have a single comment to add about imap_open.
If you want to connect to a news server, without specifying any news gruop, you can use the following:

<?php
$server
= "{news.servername.com/nntp:119}";
$nntp = imap_open($server,"","",OP_HALFOPEN);
?>

and $nntp will become the connection ID.

Regards
//Babak
up
-2
phpnet at danepowell dot com
12 years ago
If you are accessing a local mailbox file, i.e. imap_open('/var/mail/www-data', '', ''), you may be restricted in what files you can access.

If PHP IMAP was compiled with the restrictBox option (which I believe most packages are these days), you can only access files relative to $HOME. Paths starting with '/' or '../' will be rejected.
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-1
reg1barclay at REMOVETHIS dot live dot it
5 years ago
On Windows, this function does not use certificates in directories listed by openssl_get_cert_locations(): it use system's certificates store. If you want to use a certificate signed by a test authority, you must add root certificate of your test authority to Window's certificates store.
up
-1
Valerio Pulese
8 years ago
If you get slow imap4/pop3 authentication step
i.e. 5-10 sec just for response, maybe you are connecting to an imap server which is advertising GSSAPI auth mechanism.
Martin Eckardt note could help to speed it up.
<?php
$mbox
= imap_open("{imap server with GSSAPI :993/imap/ssl}", $user, $password, NULL, 1, array('DISABLE_AUTHENTICATOR' => 'GSSAPI'));
?>

Disable GSSAPI if you dont use it.
If your imap/pop server is Dovecot
/etc/dovecot/conf.d/10-auth.conf
...
auth_mechanisms = plain login gssapi
-> auth_mechanisms = plain login
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Brian Law
9 years ago
imap_open()
validate SSL certificate does not support Subject Alternative Name (SAN) certificate. It only validate against the Subject/Common name.
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oz49erfan
14 years ago
Make sure your PHP is enabled with imap via the phpinfo() function

'--with-imap-dir=/opt/lampp' '--with-imap-ssl' '--with-imap=/opt/lampp'

and

IMAP c-Client Version 2007e
SSL Support Yes

I noticed that my apache script was working but my cli script was not. Turns out my php cli executable didn't have imap setup so I had to use another php cli executable.
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Jason Pires
15 years ago
Dears.
In my case, e-mail host was the IMAP enabled.
So, just use the imap_open as the very simple form like:

$mailbox = "{mail.myhost.com:143/notls}INBOX";
$user = "me@myhost.com";
$pass = "mypassword";

$connection = imap_open($mailbox,$user,$pass) or die(imap_last_error()."<br>Connection Faliure!");

thanks!
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gasaunde at vcu dot edu
19 years ago
I've found that on my servers I _must_ use imap_errors() and imap_alerts() after an imap_open or this error is thrown in the logs when the mailbox is empty: [error] PHP Warning: (null)(); Mailbox is empty (errflg=1) in Unknown on line 0
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marshall /AT\ pacdemon.org
20 years ago
Thanks for all your comments. The user comments have saved me countless times.

I'd like to give back in my small way by providing this little tip. To test your pop or imap services you can use telnet (almost all operating systems should come with a command line telnet client).

Here's the pop3 example (the lines that start with + are the server's response):

telnet your.pop.host.com 110
+OK POP3 your.pop.host.com v2001.78 server ready
user your_username
+OK User name accepted, password please
pass your_password
+OK Mailbox open, 23 messages

Note that your pop server may be on some other port than 110 but that is the default/standard.

Here's the imap example (Lines that have OK near the begining are server responses):

telnet your.imap.host.com 143
* OK [CAPABILITY IMAP4REV1...]
1 LOGIN "your_username" "your_password"
1 OK [CAPABILITY...] ... User your_username authenticated

This might be old news to some people but I hope it's helpful for many.
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chris at ocproducts dot com
3 years ago
imap_open supports SSL/TLS and start-TLS, and also totally unencrypted sessions.

The documentation here slightly conflates things.

Where it is referring to SSL (/ssl) it is really referring to SSL/TLS of the immediate variety. The initial connection will immediately be SSL/TLS, rather than later upgraded. (I don't know the specifics about which versions of SSL/TLS c-client is going to be negotiating/using.)

The '/tls' and '/notls' options are just about start-TLS, i.e. upgraded connections.

Note there is a '/notls' option but not a '/nossl' option. That is because by default c-client is going to upgrade to TLS (start-TLS) when it sees it as an advertised option by the IMAP server. i.e. it is going to do it based on auto-detection. The '/notls' option disables that auto-detection, which is sometimes necessary. For example, I just helped someone whose IMAP server advertises start-TLS to connections on port 143 but it actually only works on port 993. Regular SSL/TLS doesn't do any auto-detection as the connection mode has to be explicitly made upfront anyway.
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