[CentOS] restricting mails from "mail" command to specific domains only in postfix

Joshua Gimer jgimer at gmail.com
Thu Jan 1 22:04:55 UTC 2009


On Thu, Jan 1, 2009 at 4:26 AM, ankush grover <ankushcentos at gmail.com> wrote:
> Hi Friends,
>
> I have configured Postfix mail server on Centos  for relaying mails
> from 5 linux servers (including itself) within the same LAN. The
> postfix mail server should relay mails from these 5 linux servers for
> specific domains only. For example hosts 192.168.0.23/24/25/26/27 and
> the postfix mail server should only be able to receive and send mails
> from and to example.com,example2.com and example3.com domains only.
> Below is the configuration of the postfix mail server
>
> myhostname = test.example.com
> myorigin = $mydomain
> inet_interfaces = all
> mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
> mynetworks_style = subnet
> mynetworks = 192.168.0.23/32,192.168.0.24/32,192.168.0.25/32,127.0.0.1/32,192.168.0.26/32,192.168.0.27/32
> ,relay_domains = $mydestination,example.com,example2.com,example3.com
> smtpd_recipient_restrictions =
> reject_unauth_destination,permit_mynetworks,reject
>
>
> The issue I am facing is that whenever things are working fine when I
> check the things through telnet but when I do testing through command
> line through "mail" command I am able to send mails to any domain from
> these 5 servers.
>
> bash-2.05$ telnet test.example.com 25
> Trying 192.168.0.27...
> Connected to test.
> Escape character is '^]'.
> 220 test.example.com ESMTP Postfix (2.2.5)
> mail from:ankush.grover at example.com
> 250 Ok
> 501 Syntax: RCPT TO: <address>
> rcpt to:ankush at gmail.com
> 554 <ankush at gmail.com>: Relay access denied
>
>
> How can I restrict mails even going through "mail" command from these
> 5 servers to specific domains only. These 5 servers are running some
> cronjobs and these cronjobs output it mailed through "mail" command.
>
>
> Regards
>
> Ankush
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>

If you are using sendmail as the local MTA on these 5 systems
(default) did you change your smarthost configuration to forward mail
through your postfix mail relay?

-- 
Thx
Joshua Gimer


More information about the CentOS mailing list