Re: mail defered on local network

On 17 November 2011 17:14, Tim Dunphy <bluethundr@jokefire.com> wrote:
> Hello list,
>
>  I am attempting to build a basic postfix setup that is able to send mail to the internet. Receiving email is not a priority.
>
>  I've verified that this basic setup DOES work on an Amazon EC2 instance and can be used to send email to anyplace it would like. However when I transfer the config (main.cf and master.cf) to our work network the messages are deferred and rejected by any mail server it encounters. I'd like very much to understand why this is happening and to get this config to work on our local network.
>
>  If I perform a telnet mail test on my local network the message is rejected and deferred no matter what mail server it tries to communicate with:
>
>  [monitor03:root:/etc/postfix]#telnet localhost 25
>   Trying 127.0.0.1...
>   Connected to localhost.
>   Escape character is '^]'.
>   220 monitor03.localdomain ESMTP Postfix
>   HELO monitor03
>   250 monitor03.localdomain
>   MAIL FROM: <mail-sender@sending-domain.com>
>   250 2.1.0 Ok
>   RCPT TO: <mail-receiver@receiving-domain.com>
>   250 2.1.5 Ok
>   DATA
>   354 End data with <CR><LF>.<CR><LF>
>   Subject: test message
>   test test test
>   .
>   250 2.0.0 Ok: queued as E45C2136357
>   quit
>   221 2.0.0 Bye
>   Connection closed by foreign host.
>
>   This is what happens in the mail log when this test is performed:
>
>   Nov 17 16:25:39 monitor03 postfix/smtp[26004]: E45C2136357: to=<mail-receiver@receiving-domain.com>, relay=none, delay=4755,      delays=4755/0.02/0.05/0, dsn=4.4.1, status=deferred (connect to alt4.gmail-smtp-in.l.google.com[74.125.43.27]:25:  Connection refused)

4.4.1 is a transient network failure.
http://www.ietf.org/rfc/rfc1893.txt

What happens if you do your telnet test from the host to google directly?

Also, for a direct comparison send the email from the working server
to google (even though I believe you that it's a generic problem).

Simon

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