isp blocks port 25

Discussion in 'Installation/Configuration' started by snook, Jun 22, 2006.

  1. snook

    snook New Member

    ISPconfig is very cool and I have most of it working.

    So, my isp blocks port 25 and I have got around this in the past by using the smtp redirect service with and port 2525 with another mail server.

    I've added to /etc/postfix/

    smtp inet n - n - - smtpd
    2525 inet n - n - - smtpd

    I can telnet to both 25 and 2525 and get the normal responses and postfix is running.

    netstat -tap provides this:

    Active Internet connections (servers and established)
    Proto Recv-Q Send-Q Local Address Foreign Address Stat e PID/Program name
    tcp 0 0 *:imaps *:* LIST EN 1814/xinetd
    tcp 0 0 *:pop3s *:* LIST EN 1814/xinetd
    tcp 0 0 *:49507 *:* LIST EN 1529/rpc.statd
    tcp 0 0 *:mysql *:* LIST EN 1908/mysqld
    tcp 0 0 *:pop3 *:* LIST EN 1814/xinetd
    tcp 0 0 *:imap *:* LIST EN 1814/xinetd
    tcp 0 0 *:sunrpc *:* LIST EN 1511/portmap
    tcp 0 0 *:81 *:* LIST EN 2156/ispconfig_http
    tcp 0 0 *:* LIST EN 2418/named
    tcp 0 0 hidden.dom:domain *:* LIST EN 2418/named
    tcp 0 0 hidden.dom:ipp *:* LIST EN 1765/cupsd
    tcp 0 0 hidden.dom:5335 *:* LIST EN 1747/mDNSResponder
    tcp 0 0 *:smtp *:* LIST EN 3506/master
    tcp 0 0 hidden.dom:rndc *:* LIST EN 2418/named
    tcp 0 0 *:2525 *:* LIST EN 3506/master
    tcp 0 0 *:http *:* LIST EN 2323/httpd
    tcp 0 0 *:ssh *:* LIST EN 1805/sshd
    tcp 0 0 localhost:rndc *:* LIST EN 2418/named
    tcp 0 0 *:https *:* LIST EN 2323/httpd
    tcp 0 148 ::ffff: ::ffff: ESTA BLISHED 5264/2
    tcp 0 0 ::ffff: ::ffff: ESTA BLISHED 2792/sshd: snook[pr

    There is an A record pointing to mail under the domain to the correct global IP.

    The MX record points to

    However, when I try to point an email client to or the IP address I get a mail relay access denied when trying to send.. I'm not sure if the issue is with the local ispconfig server or with rollernet. Or maybe both. When I send an email from an external account it disappears. No bounce and no received email.

    I've trawled through the forums looking for the answer to this but haven't found it. Probably I've missed something obvious.
  2. lerra

    lerra New Member

    Did you tell postfix to send all mail to Please check there forum/docs, they should have examples!

    Do you get login promt when you try to send mails? Elese you could add your local lan to the relaynetwork. If you dont get login promt you need to specify that authpam should be used for relaying.
    Try to send with the webmail application too, check what says in /var/log
  3. snook

    snook New Member

    can send

    OK, have got a little further.

    Can now send to external but not receiving anything.

    So, if (ISPC) sends to that works fine. If I reply from to that message it disappears. No bounce, no delivery. It's probably the rollernet thing. I'll keep checking.

    Also, when I log in the client it does ask for a password which it accepts.

  4. falko

    falko Super Moderator

    Please make sure Maildir is disabled under Management -> Server -> Settings -> Email.
  5. snook

    snook New Member


    Hi Falko,

    To disable the maildir should that be checked or unchecked? It's currently unchecked.

  6. snook

    snook New Member

    Webmail working

    Thanks Leera,

    Installed the webmail stuff and all the test messages were in there. Can send end to end now this way and need to spend some more time tweaking the pop side. Lack of knowledge really.

    I'll post further when I have it figured.


  7. falko

    falko Super Moderator

    Yes, it must be unchecked.

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