On 1/4/2013 9:19 AM, Viaduct Productions wrote:
> Hi folks.
> 
> I'm using some middleware to generate an email that's sent to Mac OSX 
> Server's installation of postfix.  The email never gets through, and I don't 
> know why.  I've had some suggestions which I will post below, but nothing 
> seems to work.  I am not authenticating, and I've tried authentication which 
> does not work either.  I don't know postfix at all, so I'm trying to see what 
> could be the problem by posting these tidbits of feedback and logs here.  Any 
> input appreciated.  I'm stumped as to why this isn't working.  
> 
> 192.168.1.4 is my workstation
> 192.168.1.7 is the server on 10.8.2 Server
> 
> SMTP log from Server.app
> Jan  3 15:23:03 alpha.mydomain.com postfix/postscreen[4262]: DNSBL rank 2 for 
> [188.2.165.91]:4368
> Jan  3 15:23:04 alpha.mydomain.com postfix/smtpd[4213]: connect from 
> cable-188-2-165-91.dynamic.sbb.rs[188.2.165.91]

Is there some reason the above IP is included in your error report?

> Jan  3 15:23:04 alpha.mydomain.com postfix/postscreen[4262]: CONNECT from 
> [192.168.1.4]:63328 to [192.168.1.7]:25
> Jan  3 15:23:04 alpha.mydomain.com postfix/postscreen[4262]: WHITELISTED 
> [192.168.1.4]:63328
> Jan  3 15:23:04 alpha.mydomain.com postfix/smtpd[4325]: connect from 
> unknown[192.168.1.4]
> Jan  3 15:23:04 alpha.mydomain.com postfix/smtpd[4325]: disconnect from 
> unknown[192.168.1.4]


A connect/disconnect with no other logs strongly suggests that the
receiving postfix is not the problem.  Suspects include a
configuration error on the sending client, a firewall issue, or a
networking problem.

Suggestions:
- Test the connection from your workstation to postfix with telnet.
 If that works, it eliminates firewall or networking as possible
issues, and points to the sending client software.
- Look for errors in the sending software; hopefully it has useful logs.
- Record a session with tcpdump to see details of what's happening
on the wire. http://www.postfix.org/DEBUG_README.html#sniffer


Authentication and/or adding the workstation IP to mynetworks is
only useful if postfix is rejecting the mail.  This doesn't seem to
be the case here since postfix logs all rejections.



  -- Noel Jones

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