On 8/14/2010 10:18 PM, Eljon Curry wrote:
I have been trying for a week now to get vBulletin to play nice with my 
Postfix/Dovecot setup.  I've thrown my hands up and have come to the mailing 
list for help.  Yes, I've searched archives, Googled, Lycos'd, Yahoo!'d, 
contacted my SMTP Relay (they're useless at this point) and yes, prayed.

I'm running Ubuntu Lucid Lynx with Postfix and Dovecot installed and configured 
11 different ways as per my results from various avenues of searching.  I can 
send mail locally.  I can even send mail out to yahoo and gmail accounts 
through a SMTP Relay I'm paying for (?).  However, when I try to send out 
emails VIA vBulletin I get the following:

postfix/smtpd[16354]: 38BEE86492: client=mydomain.com[xx.xxx.xxx.xxx], 
sasl_method=LOGIN, sasl_username=notelling
postfix/cleanup[16359]: 38BEE86492: 
message-id=<20100815025837.2aff74bed...@www.mydomain.com>
postfix/qmgr[15953]: 38BEE86492: from=<notell...@mydomain.com>, size=1213, 
nrcpt=1 (queue active)
postfix/smtpd[16354]: disconnect from mydomain.com[xx.xxx.xxx.xxx]
postfix/smtp[16360]: certificate verification failed for 
relay.dnsexit.com[64.182.102.185]:25: self-signed certificate

This certificate message is warning, and is unlikely to causes any real problem.

postfix/smtp[16360]: 38BEE86492: to=<notell...@gmail.com>, 
relay=relay.dnsexit.com[64.182.102.185]:25, delay=2.6, delays=0.07/0.02/2.1/0.33, 
dsn=5.7.1, status=bounced (host relay.dnsexit.com[64.182.102.185] said: 550 
5.7.1<notell...@gmail.com>... Relaying denied. Proper authentication required. (in 
reply to RCPT TO command))

Here's the problem: dnsexit is expecting you to authenticate. Please see:
http://www.postfix.org/SASL_README.html#client_sasl



Various Points of Interest:

main.cf:

This is unlikely a TLS problem. If you need more help, show "postconf -n" rather than random main.cf snippets, and please read:
http://www.postfix.org/DEBUG_README.html#mail


  -- Noel Jones

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