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Old 27th November 2007, 22:30
fernando_torrez fernando_torrez is offline
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Default re: Postfix problem: lost connection after CONNECT from unknown

I run (telnet from a client PC)
telnet mail.myserver.com.bo
and after 45 seconds a got this message:

220 mail.myserver.com.bo ESMTP Postfix on SuSE Linux eMail Server 3.1


I also run the code: postconf -d | grep mydomain
and this is the output:

append_dot_mydomain = yes
mydestination = $myhostname, localhost.$mydomain
mydomain = mail

I also verified 'myhostaname' parameter, it's set with a fqdn

myhostname = mail.myserver.com.bo


I checked the postfix mail log with this command:

cat mail | grep -ie 'reject' -ie 'warn' -ie 'fatal' -ie ' error'

and got messages like these

Nov 27 00:15:12 mail postfix/smtp[25615]: 4EC5612F9DD: to=<jr_sandre@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=7386, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 00:15:12 mail postfix/smtp[25587]: warning: no MX host for musichannel.com has a valid A record
Nov 27 00:15:12 mail postfix/smtp[25587]: C60DC12FB7E: to=<Jama@musichannel.com>, relay=none, delay=7299, status=deferred (Name service error for dev.null: Host not found)
Nov 27 00:15:12 mail postfix/smtp[25589]: 44C9912FADF: to=<jr_sandre@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=7337, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 00:15:12 mail postfix/smtp[25591]: 911B712F9B5: to=<jr_sandre@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=7408, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 00:15:28 mail postfix/smtp[25331]: CAC6012F9FF: to=<Walter299@thutrang.info>, relay=none, delay=3501, status=deferred (Name service error for thutrang.info: Host not found, try again)
Nov 27 00:16:38 mail postfix/smtpd[25694]: warning: 85.96.218.50: hostname dsl.dynamic859621850.ttnet.net.tr verification failed: Host not found
Nov 27 00:17:06 mail postfix/smtpd[25710]: warning: 87.13.130.36: hostname host36-130-dynamic.13-87-r.retail.telecomitalia.it verification failed: Host not found
Nov 27 00:17:44 mail postfix/smtp[25589]: D32B312FD5C: to=<Joann753@capitaleducators.com>, relay=smtp-in.his.com[216.194.216.44], delay=36, status=deferred (host smtp-in.his.com[216.194.216.44] said: 451 4.7.1 <Joann753@capitaleducators.com>: Recipient address rejected: Greylisting in effect - you can deliver your mail for capitaleducators.com in 300 seconds ...)
Nov 27 00:19:26 mail postfix/smtpd[25694]: warning: 189.149.118.100: hostname dsl-189-149-118-100.prod-infinitum.com.mx verification failed: Host not found
Nov 27 00:20:26 mail postfix/smtp[25181]: 735B012FE12: to=<jquan@du.edu>, relay=barney.cair.du.edu[130.253.1.27], delay=1064, status=bounced (host barney.cair.du.edu[130.253.1.27] said: 550 5.7.1 <jquan@du.edu>: Recipient address rejected: blocked due to excessive spam)
Nov 27 00:21:02 mail postfix/smtpd[25153]: warning: 200.121.207.10: hostname client-200.121.207.10.speedy.net.pe verification failed: Host not found
...
Nov 27 00:31:51 mail postfix/smtp[26115]: 5B95012F9E8: to=<Gilveryfwo@teamsmile.com>, relay=none, delay=7775, status=deferred (Name service error for smtp: Host not found)
Nov 27 00:31:51 mail postfix/smtp[26132]: A9C4212FDEA: to=<jr.f15@bol.com.br>, relay=mx.bol.com.br[200.221.29.128], delay=3792, status=deferred (host mx.bol.com.br[200.221.29.128] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 00:31:54 mail postfix/smtp[26124]: A21CE12FE23: to=<jra@mapfre.com.br>, relay=mailer.mapfre.com.br[200.246.177.30], delay=2, status=bounced (host mailer.mapfre.com.br[200.246.177.30] said: 550 #5.1.0 Rejected by bounce verification.)
Nov 27 00:31:54 mail postfix/smtp[26123]: D847C12FB4B: to=<Marinarocbc@lifelikej.net>, relay=none, delay=7423, status=deferred (Name service error for lifelikej.net: Host not found, try again)
Nov 27 00:31:56 mail postfix/smtp[25980]: warning: no MX host for forhealthyskin.com has a valid A record
Nov 27 00:31:56 mail postfix/smtp[25980]: 7900312FE07: to=<stcovenant.org@forhealthyskin.com>, relay=none, delay=3739, status=deferred (Name service error for dev.null: Host not found)
Nov 27 00:31:58 mail postfix/smtp[26132]: 8748D12FE23: to=<jra@mapfre.com.br>, relay=mailer.mapfre.com.br[200.211.99.154], delay=2, status=bounced (host mailer.mapfre.com.br[200.211.99.154] said: 550 #5.1.0 Rejected by bounce verification.)
Nov 27 00:32:01 mail postfix/smtp[26116]: 22B1012FC67: to=<Mitchnwhnj@dobvod.ru>, relay=none, delay=17674, status=deferred (Name service error for dobvod.ru: Host not found, try again)
Nov 27 00:32:42 mail postfix/smtp[26116]: 0E90D12FE30: to=<jqnlx@carle.com>, relay=mx5.carle.com[199.184.120.181], delay=1, status=bounced (host mx5.carle.com[199.184.120.181] said: 550 5.1.1 <jqnlx@carle.com>: Recipient address rejected: User unknown)
...
Nov 27 00:37:32 mail postfix/smtpd[25985]: warning: 203.113.26.17: hostname 203-113-26-17.totisp.net verification failed: Host not found
Nov 27 00:37:32 mail postfix/smtpd[25972]: warning: 203.113.26.17: hostname 203-113-26-17.totisp.net verification failed: Host not found
Nov 27 00:37:35 mail postfix/smtpd[25971]: warning: 203.113.26.17: hostname 203-113-26-17.totisp.net verification failed: Host not found
...
Nov 27 15:18:27 mail postfix/smtp[13244]: 1704112FE28: to=<jr2004@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=36360, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 15:18:28 mail postfix/smtp[13253]: 1167912FABD: to=<jr2004@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=171420, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 15:18:29 mail postfix/smtp[13277]: 6F3F912FBF9: to=<jquire@dcr.net>, relay=filter2.win.net[216.24.27.102], delay=1671, status=bounced (host filter2.win.net[216.24.27.102] said: 554 5.7.1 <jquire@dcr.net>: Recipient address rejected: User unknown in virtual mailbox table)
Nov 27 15:18:30 mail postfix/smtp[13255]: 64CD712FB17: to=<jr2004@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=171458, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
Nov 27 15:18:31 mail postfix/smtp[13275]: 61A4012FC19: to=<jr2004@uol.com.br>, relay=mx.uol.com.br[200.221.29.129], delay=82894, status=deferred (host mx.uol.com.br[200.221.29.129] said: 450 Client host rejected: cannot find your hostname, [190.129.91.2])
...
Nov 27 15:25:57 mail postfix/smtpd[13515]: warning: 201.53.170.22: hostname c935aa16.virtua.com.br verification failed: Host not found
Nov 27 15:26:04 mail postfix/smtpd[13517]: warning: 201.53.170.22: hostname c935aa16.virtua.com.br verification failed: Host not found
Nov 27 15:26:53 mail postfix/smtpd[13530]: warning: 201.53.170.22: hostname c935aa16.virtua.com.br verification failed: Host not found
Nov 27 15:27:56 mail postfix/smtpd[13546]: warning: 75.148.0.66: hostname 75-148-0-66-WashingtonDC.hfc.comcastbusiness.net verification failed: Host not found
...
Nov 27 15:11:55 mail postfix/smtp[12691]: 5CCBE12FA6C: to=<jra@axel.ocn.ne.jp>, relay=mfgw5.ocn.ad.jp[125.206.187.87], delay=3, status=bounced (host mfgw5.ocn.ad.jp[125.206.187.87] said: 554 5.7.1 <jra@axel.ocn.ne.jp>: Recipient address rejected: Access denied)
Nov 27 15:12:00 mail postfix/smtp[12690]: 63DFC12FA6C: to=<jra@axel.ocn.ne.jp>, relay=mfgw5.ocn.ad.jp[125.206.188.198], delay=3, status=bounced (host mfgw5.ocn.ad.jp[125.206.188.198] said: 554 5.7.1 <jra@axel.ocn.ne.jp>: Recipient address rejected: Access denied)
Nov 27 15:12:00 mail postfix/smtp[12691]: ED6D412F767: to=<jra@axel.ocn.ne.jp>, relay=mfgw5.ocn.ad.jp[125.206.188.199], delay=3, status=bounced (host mfgw5.ocn.ad.jp[125.206.188.199] said: 554 5.7.1 <jra@axel.ocn.ne.jp>: Recipient address rejected: Access denied)
Nov 27 15:12:06 mail postfix/smtp[12690]: 557C412FA6C: to=<jra@axel.ocn.ne.jp>, relay=mfgw5.ocn.ad.jp[125.206.188.198], delay=2, status=bounced (host mfgw5.ocn.ad.jp[125.206.188.198] said: 554 5.7.1 <jra@axel.ocn.ne.jp>: Recipient address rejected: Access denied)
...
Nov 27 15:05:14 mail postfix/qmgr[18780]: 716E612F9D0: to=<jr@jrtr.org>, relay=none, delay=77244, status=deferred (Name service error for jrtr.org: Host not found, try again)
Nov 27 15:05:14 mail postfix/qmgr[18780]: 808E812F9BF: to=<jr@jrtr.org>, relay=none, delay=77230, status=deferred (Name service error for jrtr.org: Host not found, try again)


no fatal errors found

I just saw that postfix log has around 8000 reject or error lines over 104000
it means that around 7 percent of postfix logs implies error o reject messages
I think that this is normal for a postfix with around 150 users


I don't know what else to do...
Any suggestion with be very appreciated

thanks
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