My mailserver runs on Ubuntu with Postfix is not working properly. Few of the mails are received properly, but few are not. Even the failure notice is not sent to the sender. Sometime, some delay is also noticed in receiving.

I have oped the /var/log/mail.log file. There are a big number of messages. Following are the few:

Sep 9 13:48:53 it dovecot: imap-login: Login: user=<santipmaity>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Sep 9 13:48:53 it dovecot: IMAP(santipmaity): Disconnected: Logged out bytes=85/721
Sep 9 13:49:00 it dovecot: imap-login: Login: user=<sukanta>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Sep 9 13:49:00 it dovecot: IMAP(sukanta): Disconnected: Logged out bytes=85/708
Sep 9 13:58:53 it dovecot: imap-login: Login: user=<santipmaity>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Sep 9 13:58:53 it dovecot: IMAP(santipmaity): Disconnected: Logged out bytes=85/721
Sep 9 13:59:01 it dovecot: imap-login: Login: user=<sukanta>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Sep 9 13:59:01 it dovecot: IMAP(sukanta): Disconnected: Logged out bytes=85/708
Sep 9 14:00:29 it postfix/smtpd[2051]: connect from itbox.it.becs.ac.in[10.24.0.1]
Sep 9 14:00:29 it postfix/smtpd[2051]: 4F543600C9: client=itbox.it.becs.ac.in[10.24.0.1]
Sep 9 14:00:29 it postfix/cleanup[2057]: 4F543600C9: message-id=<1315554525.85976.YahooMailClassic@web112604.mail.gq1.yahoo.com>
Sep 9 14:00:29 it postfix/qmgr[1245]: 4F543600C9: from=<sukanta78das@yahoo.com>, size=3295, nrcpt=1 (queue active)
Sep 9 14:00:29 it postfix/smtpd[2051]: disconnect from itbox.it.becs.ac.in[10.24.0.1]
Sep 9 14:00:29 it postfix/local[2058]: 4F543600C9: to=<sukanta@it.becs.ac.in>, relay=local, delay=0.31, delays=0.14/0.04/0/0.13, dsn=2.0.0, status=sent (delivered to mailbox)
Sep 9 14:00:29 it postfix/qmgr[1245]: 4F543600C9: removed
Sep 9 14:03:49 it postfix/anvil[2055]: statistics: max connection rate 1/60s for (smtp:10.24.0.1) at Sep 9 14:00:29
Sep 9 14:03:49 it postfix/anvil[2055]: statistics: max connection count 1 for (smtp:10.24.0.1) at Sep 9 14:00:29
Sep 9 14:03:49 it postfix/anvil[2055]: statistics: max cache size 1 at Sep 9 14:00:29

Please help me to solve the problem.

Sukanta

Hi,

The log posted by you does not point to any errors. Further details will be required to reach to some conclusion.

Regards,
Gorav

Thanks for the respose.

I have just identified, an external firewall (which connects the mailserver with the external world) is blocking few of the incoming mails. I did test that 4 mails are sent from my own yahoo account, out of which only one reached. Again, no failure notice is sent to the sender.

Can you please help?

Sukanta