Mailman - Not able to send outgoing mails

[DeepXP]

Mailman - Not able to send mails

I have been trying to understand the reason why mailman cannot send the mail from our server.

The smtp-failure log of mailman shows following output:

Apr 16 05:16:36 2013 (11703) Low level smtp error: (97, 'Address family not supported by protocol'), msgid: <[email protected]>

Apr 16 05:16:36 2013 (11703) delivery to [email protected] failed with code -1: (97, 'Address family not supported by protocol')

I have replaced the actual domain with example.com

I checked the port settings in firewall, 25, 26 are open (TCP In & Out). I even tried it after disabling the firewall but still same error.

I have ASSP Deluxe installed but I believe, this has nothing to do with it as mailman directly connects to exim via port 125 (Yes, that's also open - TCP In)

Any pointers?

Thanks
Deep

 

[quietFinn]

Re: Mailman - Not able to send mails

Any pointers?

Only that is is a problem with IPv6.

 

[DeepXP]

Any ideas on the solutions? I could not fix it myself.

 

[simonas]

Go to advanced exim settings,

Add custom value:

disable_ipv6 true

I always do that on new servers.

 

[DeepXP]

Go to advanced exim settings,

Add custom value:

disable_ipv6 true

I always do that on new servers.

I did that but still no help. Same error.

 

[DeepXP]

I figured out the issue.

I just commented the line

SMTPPORT = 125

located in /usr/local/cpanel/3rdparty/mailman/Mailman/pico mm_cfg.py

and everything started working fine.

I am not sure how that port specification ended up getting added though.