On Tue, 22 Feb 2011 10:37:58 +0800 sunhux G <sunhux@gmail.com> articulated:
Sending outgoing emails from this dovecot/postfix server is Ok (ie emails received at destination) but incoming mails keep getting the logs below :
smtp.myportaltech.com[202.6.163.31]:25: Connection timed out Feb 21 16:37:04 hostname postfix/smtp[1381]: 8B35C200060: to=<recipient_idg@myportaltech.com>, relay=none, delay=30, delays=0.1/0.01/30/0, dsn=4.4.1, status=deferred (connect to smtp.myportaltech.com[202.6.163.31]:25: Connection timed out)
From this postfix server, if I tried doing "telnet 202.6.163.31 25" it won't respond. That is the public IP address.
If I issue "telnet private_IP_address 25" , it responds. My firewall colleague said it's not feasible to create a firewall rule from this server to its own external public address - is this a valid comment?
I'm not sure if this is the issue but I've also defined smtp.myportaltech.com in /etc/hosts to point to my server's private address but seems like smtp/postfix (or dovecot?) is still trying to connect to the external private address when it attempts to connect to smtp.myportaltech.com
You continue to post problems with mail delivery that do not appear to be dovecot related. You are also cross posting between the Postfix forum and this one.
From what I can gleam from your posts, you have tried to make some whole sale changes in the Postfix "main.cf" and now things are messed up. Replace your custom main.cf with the default on. Restart Postfix and see what transpires. Post the results on the Postfix forum where they belong. Do not modify the main.cf with any of your custom modifications until you have first tried it. You may also have to revert to the default master.cf also.
-- Jerry ✌ Dovecot.user@seibercom.net
Disclaimer: off-list followups get on-list replies or get ignored. Please do not ignore the Reply-To header.