Cannot Send Mail - Connection Time Out

Discussion in 'ISPConfig 3 Priority Support' started by nvidian, May 25, 2015.

  1. nvidian

    nvidian Member

    Hi, today my mail server suddenly cannot send mail anymore.

    When I check queue:
    123ABCDE      8751 Mon May 25 15:50:06  [email protected]
    (connect to[]:25: Connection timed out)
                                             [email protected]
    I guess my provider (VULTR) may blocked Port 25 so my questions:
    1. At my Outlook I set smtp port to 465 and use SSL (and it worked before today) , why on mailq status it still use port 25 ?
    Is it because port 465 is used for my pc connection to my server only ? And the server always use port 25 to send mail ?

    2. I use Postscreen, is it possible to use other port than 25 ?
  2. till

    till Super Moderator Staff Member ISPConfig Developer

    This is the connectin from your mailserver to gogle, not the connection from outlook to your mailserver. your mailserver will always use port 25 to connect to external mailsevers like google.

    No. The opetions that you have are:

    a) Move the server to a datecenter where port 25 is not blocked.
    b) Use a email relay server (e.g. the mailserver of your provider) to send all outgoing email from your server trough that relay. You Can configure a relay server under System > Server config > mail.
  3. nvidian

    nvidian Member

    Hi, Till,
    How if I remove postscreen and force postfix to use other port ? Is it possible and how ?
  4. till

    till Super Moderator Staff Member ISPConfig Developer

    You cant because other servers expect to be connected on port 25. Postscreen is not related to this at all.
  5. nvidian

    nvidian Member

    Wow, thank Till. I now plan to move away from this provider.

Share This Page