Question

This is my code:

  $server = '{imap.gmail.com:993/ssl/novalidate-cert}';
  $imap_connection = imap_open($server, $login, $password);
  $mailboxinfo = imap_mailboxmsginfo($imap_connection);
  $messageCount = $mailboxinfo->Nmsgs;

Its throwing some errors .

Warning: imap_open() [function.imap-open]: Couldn't open stream {imap.gmail.com:993/ssl/novalidate-cert} in /home2/booksby/public_html/anonymousemail.php on line 13

Googling suggests that the problem is due to some firewall issues. And my hosting provider is asking me which port does my php script uses.

So can someone tell me which port needs to opened for the above to work ? is it 993 ? Any way I can find out for sure ?

Thanks

Answer 1

AS IBM states in their documentation:

Choose 143 (default) to use the industry standard port for IMAP
connections over TCP/IP. You can specify a different port, but 143
works in most situations. When specifying a nonstandard port, make
sure the port is not reserved for another service. Port numbers can be
any number from 1 to 65535.

// To connect to an IMAP server running on port 143 on the local machine,
// do the following:
$mbox = imap_open("{localhost:143}INBOX", "user_id", "password");

for further reference see this link of php manual

as by @max

143 is the default /insecure/ port for IMAP. In the wild, most servers require SSL, which is on port 993.