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List:       courier-users
Subject:    Re: [courier-users] smtp error logging
From:       Sam Varshavchik <mrsam () courier-mta ! com>
Date:       2008-01-24 12:03:26
Message-ID: cone.1201176206.290785.25268.500 () commodore ! email-scan ! com
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Enda writes:

> Sam Varshavchik wrote:
>>>
>>> That says to me that courier is trying to deliver this message to host
>>> studioalp.it even though its not listed as a mail exchanger for the 
>>> domain.
>>
>> No, it doesn't say that.
> 
> Ok, so I can then assume then that courier is connecting to the correct mx 
> host to send the mail.
> 
> I cannot see much from the logs that is going to help me track down the 
> problem. I can telnet into port 25 of the remote host and queue a message. 
> The only oddity that I see is when I manually connect to the remote mx, I 
> must issue a carraige return before I get the 220 banner greeting. Would 
> this be a likely cause of the standoff between the two mta's ??

Yes. If that's the case, the remote host does not implement SMTP, but rather 
some other unknown protocol. SMTP servers do not require any CRs before 
responding with their greeting.


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