Is my postfix hacked?
Hi guys! I really need help in my matter!
Yesterday I analyzed mail logs and noticed something really strange. I think my postfix is hacked. We do not use our mail server too much, but maillog is full of unrecognized records. Here is the part of it:
Quote:
May 8 07:32:55 s2 postfix/qmgr[10256]: 7FDF11049C6: to=<hemingway@ctv.es>, relay=none, delay=75981, delays=75981/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host inw.wanadoo.es
[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:55 s2 postfix/qmgr[10256]: 71C79104A43: from=<info@banesnet.es>, size=2453, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 71C79104A43: to=<davidmorg@mixmail.com>, relay=none, delay=73514, delays=73514/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host ing.wanad
oo.es[62.36.20.73] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:55 s2 postfix/qmgr[10256]: 71C79104A43: to=<davidsuescunm@wanadoo.es>, relay=none, delay=73514, delays=73514/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host inw.wa
nadoo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:55 s2 postfix/qmgr[10256]: 7C1C210479C: from=<info@bancaja.es>, size=2421, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 72A04104B17: from=<>, size=5258, nrcpt=1 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 980FF10483E: from=<info@bancaja.es>, size=2395, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 93DE41049B6: from=<info@santandersupernet.es>, size=3322, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 93DE41049B6: to=<asoto4@bellsouth.net>, relay=none, delay=76076, delays=76076/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host gateway-f1
.isp.att.net[204.127.217.16] refused to talk to me: 550-87.226.13.245 blocked by ldap u=rblmx,dc=att,dc=net 550 Error - Blocked for abuse. See http://att.net/blocks)
May 8 07:32:55 s2 postfix/qmgr[10256]: 9CEC21049E1: from=<info@santandersupernet.es>, size=3322, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 9CEC21049E1: to=<reyamartinez@bellsouth.net>, relay=none, delay=75833, delays=75833/0.01/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host g
ateway-f1.isp.att.net[204.127.217.16] refused to talk to me: 550-87.226.13.245 blocked by ldapu=rblmx,dc=att,dc=net 550 Error - Blocked for abuse. See http://att.net/blocks)
May 8 07:32:55 s2 postfix/qmgr[10256]: 9CEC21049E1: to=<reyangel117@comcast.net>, relay=none, delay=75833, delays=75833/0.01/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx1b
.comcast.net[76.96.62.116] refused to talk to me: 554 IMTA22.westchester.pa.mail.comcast.net comcast 87.226.13.245 Comcast requires that all mail servers must have a PTR record with a valid Reverse DN
S entry. Currently your mail server does not fill that requirement. For more information, refer to: http://help.comcast.net/content/faq/PTR)
May 8 07:32:55 s2 postfix/qmgr[10256]: 9CEC21049E1: to=<reyalice@juno.com>, relay=none, delay=75833, delays=75833/0.02/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx.dca.unt
d.com[64.136.44.37] refused to talk to me: 550 Access denied...4f513585c185a9a9616014d901bdb901804d3d59f 0658d50a9b4f050e990904495cdad1090ad6420e100...)
May 8 07:32:55 s2 postfix/qmgr[10256]: 95BDD1049BC: from=<info@santandersupernet.es>, size=3322, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 9750E1047F7: from=<info@bancaja.es>, size=2395, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 6F4F8104704: from=<oficina@banestnet.es>, size=2466, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 6AA8C1047BD: from=<info@bancaja.es>, size=2421, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 6A0111046F2: from=<oficina@banestnet.es>, size=2466, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 6C3D210492F: from=<info@bancaja.es>, size=2395, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 6C3D210492F: to=<jesussv@wanadoo.es>, relay=none, delay=213500, delays=213500/0.01/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host inw.wan
adoo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:55 s2 postfix/qmgr[10256]: 634571047A1: from=<info@bancaja.es>, size=2421, nrcpt=50 (queue active)
May 8 07:32:55 s2 postfix/qmgr[10256]: 634571047A1: to=<keliichang@comcast.net>, relay=none, delay=327123, delays=327123/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx1b.c
omcast.net[76.96.62.116] refused to talk to me: 554 IMTA22.westchester.pa.mail.comcast.net comcast 87.226.13.245 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS
entry. Currently your mail server does not fill that requirement. For more information, refer to: http://help.comcast.net/content/faq/PTR)
May 8 07:32:55 s2 postfix/qmgr[10256]: 634571047A1: to=<keithevan@cox.net>, relay=none, delay=327123, delays=327123/0/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx.west.cox
May 8 07:32:56 s2 postfix/qmgr[10256]: 303C410494A: to=<mha@eresmas.com>, relay=none, delay=213333, delays=213332/0.82/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host ine.wanado
o.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:56 s2 postfix/qmgr[10256]: E3BD71048A3: to=<harppo_nene@eresmas.com>, relay=none, delay=248015, delays=248014/0.69/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host in
e.wanadoo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:56 s2 postfix/qmgr[10256]: E1B1310480D: to=<ishtarkmm@eresmas.com>, relay=none, delay=214804, delays=214804/0.67/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host ine.
wanadoo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:56 s2 postfix/qmgr[10256]: 08B9E10479B: to=<agfg@eresmas.com>, relay=none, delay=326939, delays=326939/0.64/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host ine.wanad
oo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:56 s2 postfix/qmgr[10256]: 08B9E10479B: to=<agnogales@eresmas.com>, relay=none, delay=326939, delays=326939/0.64/0/0, dsn=4.0.0, status=deferred (delivery temporarily suspended: host ine.
wanadoo.es[62.36.20.20] refused to talk to me: 550 Reverse DNS lookup failed for host 87.226.13.245.)
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es: num=19:self signed certificate in certificate chain
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es: num=24:invalid CA certificate
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es: num=26:unsupported certificate purpose
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21724]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es: num=19:self signed certificate in certificate chain
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es: num=24:invalid CA certificate
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es: num=26:unsupported certificate purpose
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21725]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21709]: certificate verification failed for mail.aselegal.com: num=18:self signed certificate
May 8 07:32:56 s2 postfix/smtp[21659]: 1B3CD1048F0: to=<jrsamada@ramonsamada.es>, relay=none, delay=245073, delays=245072/0.12/1/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name ser
vice error for name=ramonsamada.es type=MX: Host not found, try again)
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net: num=19:self signed certificate in certificate chain
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net: num=24:invalid CA certificate
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net: num=26:unsupported certificate purpose
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21740]: certificate verification failed for tnetmx.telefonica.net:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21696]: certificate verification failed for mail.envalladolid.com: num=18:self signed certificate
May 8 07:32:56 s2 postfix/smtp[21696]: certificate verification failed for mail.envalladolid.com: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21696]: certificate verification failed for mail.envalladolid.com:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21696]: certificate verification failed for mail.envalladolid.com:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21691]: 738FC1049C2: host mailin-02.mx.aol.com[205.188.249.91] said: 421 SERVICE NOT AVAILABLE, TEMPORARY DNS FAILURE (in reply to MAIL FROM command)
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es: num=19:self signed certificate in certificate chain
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es: num=24:invalid CA certificate
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es: num=26:unsupported certificate purpose
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es: num=10:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21741]: certificate verification failed for mx.terra.es:certificate has expired
May 8 07:32:56 s2 postfix/smtp[21747]: 980FF10483E: to=<m.marsan@tiscali.it>, relay=imp-1.mail.tiscali.it[213.205.33.248]:25, delay=214747, delays=214746/0.74/0.42/0, dsn=4.0.0, status=deferred (host
imp-1.mail.tiscali.it[213.205.33.248] refused to talk to me: 554 imp-1.mail.tiscali.it ESMTP server not available if you do not have a reverse dns mapping)
May 8 07:32:56 s2 postfix/smtp[21673]: 1FFFF104B60: to=<maite@todoyoga.es>, relay=none, delay=58192, delays=58190/0.24/0.99/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service
error for name=todoyoga.es type=MX: Host not found, try again)
May 8 07:32:56 s2 postfix/smtp[21731]: connect to mail.q8online.com[195.39.142.2]: Connection refused (port 25)
May 8 07:32:56 s2 postfix/smtp[21731]: 7FDF11049C6: to=<helpdesk@q8online.com>, relay=none, delay=75982, delays=75981/0.68/0.5/0, dsn=4.4.1, status=deferred (connect to mail.q8online.com[195.39.142.2
]: Connection refused)
May 8 07:32:56 s2 postfix/smtp[21708]: 754B810452E: to=<pilarm.hoces.sspa@deandalucia.es>, relay=none, delay=246705, delays=246704/0.55/0.65/0, dsn=4.4.3, status=deferred (Host or domain name not fou
nd. Name service error for name=deandalucia.es type=MX: Host not found, try again)
May 8 07:32:56 s2 postfix/smtp[21726]: certificate verification failed for relay.unizar.es: num=19:self signed certificate in certificate chain
May 8 07:32:56 s2 postfix/smtp[21707]: 771BB1047A8: host mailin-02.mx.aol.com[205.188.249.91] said: 421 SERVICE NOT AVAILABLE, TEMPORARY DNS FAILURE (in reply to MAIL FROM command)
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Many .es domain names, but our mail server is in .lv zone! And we do not have so much users, to send SO MANY emails!!!
What steps should I take now? Is it trojan horse on my server or something???
P.S.
I am using CentoOS 5.2 (Perfect server install)
Last edited by bzzik; 8th May 2009 at 12:51.
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