Cant send emails error 451 4.1.8 help!!!

bsasninja

Well-Known Member
Sep 2, 2004
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Until two days ago I could send emails to a specific address at [email protected]
Then I couldnt send to that address anymore.
Even I cant send to that address from 3 different servers located in different countries and IPs.

The [email protected] is receiving emails from other locations very well, but I cant send to it at any way. I tried 3 different addresses in 3 different servers I have and the same error.
Seems that some exim.conf parameter is doing mess. Help!!!!!

All of them same configured gives me the following errors:


1Hgfiw-000203-Uw == [email protected] R=lookuphost T=remote_smtp defer (-45): SMTP error from remote mail server after MAIL FROM:<[email protected]> SIZE=1898: host relay1.gba.gov.ar [170.155.5.3]: 451 4.1.8 Domain of sender address [email protected] does not resolve
2007-04-26 04:19:44 1Hgjly-0005qY-Li == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 04:19:44 1Hgfiw-000203-Uw == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 05:19:44 1Hgfiw-000203-Uw == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 05:19:44 1Hgjly-0005qY-Li == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 06:19:44 1Hgfiw-000203-Uw == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 06:19:44 1Hgjly-0005qY-Li == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 07:19:44 1Hgfiw-000203-Uw == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-04-26 07:19:44 1Hgjly-0005qY-Li == [email protected] R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host


Here is the HELO between servers (it happens with all my servers) and why Is detecting the hostname and ip as forged???????????????????????? Dns setup is ok with no erros at dnsreport.

delivering 1Hgjly-0005qY-Li
Connecting to relay1.gba.gov.ar [170.155.5.3]:25 ... connected
SMTP<< 220 gate3.gba.gov.ar ESMTP Sendmail 8.13.4/8.13.4/Debian-3sarge3; Thu, 26 Apr 2007 09:40:43 -0300; (No UCE/UBE) logging access from: [xxx.xxx.xxx.xxx](FORGED)-server.mydomain.com [xxx.xxx.xxx.xxx] (may be forged)
SMTP>> EHLO server.unarea.com
SMTP<< 250-gate3.gba.gov.ar Hello server.mydomain.com [xxx.xxx.xxx.xxx] (may be forged), pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
SMTP>> MAIL FROM: SIZE=2645
SMTP>> RCPT TO:
SMTP>> DATA
SMTP<< 451 4.1.8 Domain of sender address [email protected] does not resolve
SMTP<< 503 5.0.0 Need MAIL before RCPT
SMTP<< 503 5.0.0 Need MAIL command
SMTP>> QUIT
LOG: MAIN
== [email protected] R=lookuphost T=remote_smtp defer (-45): SMTP error from remote mail server after MAIL FROM: SIZE=2645: host relay1.gba.gov.ar [170.155.5.3]: 451 4.1.8 Domain of sender address [email protected] does not resolve
 
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