Thank you Noel. Our server sends out copies of email confirmations to our clients and if the client decides to make a large order they end up pushing our volume up and we end up getting blocked by their mail server. I seem to be getting connection timed out on a lot of the hosts. I even try to telnet to ip and port 25 but it keeps timing out. I used "grep" to search in /var/log/maillog and I got this. Any ideas?
[root@mx-server ~]# cat /var/log/maillog | grep B0847E8491 Jan 30 08:44:38 mx-server postfix/cleanup[24478]: B0847E8491: message-id=<20120130164438.B0847E8491@mxser...@example.com> Jan 30 08:44:38 mx-server postfix/qmgr[16186]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 08:44:38 mx-server postfix/bounce[24473]: 2604BE84D6: sender non-delivery notification: B0847E8491 Jan 30 08:45:01 mx-server postfix/smtp[24278]: B0847E8491: to=<m...@example.com>, relay=none, delay=23, delays=0.03/0/23/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 09:08:09 mx-server postfix/qmgr[16186]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 09:08:32 mx-server postfix/smtp[24522]: B0847E8491: to=<m...@example.com>, relay=none, delay=1434, delays=1411/0/23/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 09:41:31 mx-server postfix/qmgr[16186]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 09:41:52 mx-server postfix/smtp[24793]: B0847E8491: to=<m...@example.com>, relay=none, delay=3434, delays=3412/0.1/21/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 10:48:09 mx-server postfix/qmgr[16186]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 10:48:15 mx-server postfix/smtp[25097]: B0847E8491: to=<m...@example.com>, relay=none, delay=7417, delays=7411/0.06/5.9/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=example.com type=A: Host not found, try again) Jan 30 12:11:30 mx-server postfix/qmgr[16186]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 12:11:53 mx-server postfix/smtp[25539]: B0847E8491: to=<m...@example.com>, relay=none, delay=12435, delays=12411/0.05/23/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 13:22:45 mx-server postfix/qmgr[26236]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 13:23:12 mx-server postfix/smtp[26261]: B0847E8491: to=<m...@example.com>, relay=none, delay=16713, delays=16687/0.56/26/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 13:53:27 mx-server postfix/qmgr[26443]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 13:53:55 mx-server postfix/smtp[26593]: B0847E8491: to=<m...@example.com>, relay=none, delay=18556, delays=18529/6.5/21/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) Jan 30 15:14:54 mx-server postfix/qmgr[27600]: B0847E8491: from=<>, size=3456, nrcpt=1 (queue active) Jan 30 15:15:21 mx-server postfix/smtp[27790]: B0847E8491: to=<m...@example.com>, relay=none, delay=23443, delays=23416/5.9/21/0, dsn=4.4.1, status=deferred (connect to example.com[1.2.3.4]: Connection timed out) [root@mx-server ~]# telnet 1.2.3.4 25 Trying 1.2.3.4... telnet: connect to address 1.2.3.4: Connection timed out telnet: Unable to connect to remote host: Connection timed out Gonzo Fernandez On Jan 30, 2012, at 3:36 PM, Noel Jones wrote: > On 1/30/2012 5:07 PM, Gonzo Fernandez wrote: >> Hi All, >> >> My relay servers have mail being received but unable to send. When I >> type "mailq" I see: Delivery temporarily suspended….Connection timed >> out. I also noticed this line: >> >> Tarpitting active for [1.2.3.4) >> >> I restarted postfix, flushed mailq and still everything is stuck. >> Now the mail is building up and I don't know what else to do. I'm >> still continuing to work on it but I figure I might as well ask the >> postfix team members. Can anyone help me figure this thing out please? >> >> mailq: >> >> Jan 30 13:53:27 mx-server postfix/qmgr[26443]: BC535E8264: >> from=<m...@example.com <mailto:m...@example.com>>, size=805, nrcpt=1 >> (queue active) >> Jan 30 13:53:55 mx-server postfix/qmgr[26443]: BC535E8264: >> to=<m...@example.com <mailto:m...@example.com>>, relay=none, delay=357647, >> delays=357619/28/0/0, dsn=4.4.1, status=deferred (delivery >> temporarily suspended: connect to example.com >> <http://example.com>[1.2.3.4]: Connection timed out) > > > (please post in plain-text only) > (please use example.com rather than real domain names. thanks) > > > Looks as if the destination 1.2.3.4 doesn't like your server. > You'll need to check with them about why. > > One possibility is that you've been flooding them with backscatter > and they've blacklisted you for that. If that's the problem, the > solution is to not accept mail you can't deliver. > > Or maybe you've got a spam-bot on your network that's spewing stuff > they don't like. > > But that's just speculation... Only they know the reason. > > > > -- Noel Jones
