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Old 15th June 2007, 21:53
thavaht thavaht is offline
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Default Postfix canít send mails

Iíve set up a mail server following ďThe Perfect Setup - Debian Etch (Debian 4.0)Ē how-to and all worked fine until today.
From this morning I can no longer send mails to other domains but I can send them locally and I still receive mails from everywhere.
In my /var/log/mail.log, each time I try to send mails outside, I see messages like the following:

Code:
Jun 15 23:37:37 mail imapd: Connection, ip=[::ffff:127.0.0.1]
Jun 15 23:37:37 mail imapd: LOGIN, user=thavaht, ip=[::ffff:127.0.0.1], protocol=IMAP
Jun 15 23:37:37 mail imapd: LOGOUT, user=thavaht, ip=[::ffff:127.0.0.1], headers=1334, body=0, rcvd=311, sent=3424, time=0
Jun 15 23:37:59 mail postfix/smtp[5394]: 4EE961E1A8A: lost connection with gmail-smtp-in.l.google.com[64.233.183.27] while receiving the initial server greeting
Iíve walked around several Postfix articles and googled for this message all the day with no success. Need a help.
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  #2  
Old 16th June 2007, 14:49
falko falko is offline
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Please check if your server is blacklisted: http://www.mxtoolbox.com/blacklists.aspx
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  #3  
Old 17th June 2007, 16:37
thavaht thavaht is offline
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Thank you very much for helping.
In fact I found that my server is listed.
The blacklist names are:
FIVETENFREE, FIVETENIGNORE, FIVETENKLEZ, FIVETENMULTI, FIVETENOPTIN, FIVETENOTHER, FIVETENSINGLE, FIVETENSRC, FIVETENTCPA, FIVETENWEBFORM

The reason:
ďmiscellaneous address blocks that have sent spam here
Return codes were: 127.0.0.2Ē

Following your suggestion, Iíve checked other lists on other pages and the only reference I found is FIVETEN.
I wonder how I get out of it. Any help will be appreciated.
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Old 18th June 2007, 11:43
falko falko is offline
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You must make sure that your server isn't abused by spammers. If you are sure, contact the maintainers of the blacklist and ask them to remove your server from their blacklists.
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  #5  
Old 19th June 2007, 19:26
thavaht thavaht is offline
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I sent a mail to blackhole18 at five-ten-sg.com and Iím happy to see that they removed my IP from the list. However I canít send mails yet.
I checked again and found that the IP of my Providerís proxy server is still listed there; so thatís a matter to deal with them.
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