[ExchangeList] Re: Reverse Lookup 2

  • From: "Jensen, Douglas" <douglas.jensen@xxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 17 May 2006 09:10:12 -0500

Your server  is claiming to be asnmail.autosoldnow.local when it tries
to send email. When the other email system tries to look up the ip
address via a reverse dns lookup the ip address lookup returns
mail.autosoldnow.com.  These two names are clearly not the same so the
other email server will think you are a spammer.
You need your exchange server to claim it is mail.autosoldnow.com when
it tries to send mail not asnmail.autosoldnow.local 

        WARNING: One or more of your mailservers is claiming to be a
host other than what it really is (the SMTP greeting should be a 3-digit
code, followed by a space or a dash, then the host name). If your
mailserver sends out E-mail using this domain in its EHLO or HELO, your
E-mail might get blocked by anti-spam software. This is also a technical
violation of RFC821 <http://www.dnsstuff.com/pages/rfc821.htm>  4.3 (and
RFC2821 <http://www.dnsreport.com/tools/rfc.ch?detail=2821>  4.3.1).
Note that the hostname given in the SMTP greeting should have an A
record pointing back to the same server. Note that this one test may use
a cached DNS record.
        MAIL.autosoldnow.com claims to be non-existent host
        220 ASNMAIL.autosoldnow.local Microsoft ESMTP MAIL Service,
Version: 6.0.3790.1830 ready at Wed, 17 May 2006 10:04:59 -0400 

Douglas Jensen
Douglas.Jensen@xxxxxxxxxxxxx <mailto:Douglas.Jensen@xxxxxxxxxxxxx> 
Voice (952) 402-9821
Fax (952) 402-9815
Network Administrator
Scott Carver Dakota CAP Agency, Inc.
712 Canterbury Road
Shakopee, MN 55379 



From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Andrew English
Sent: Wednesday, May 17, 2006 8:37 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Reverse Lookup 2

Can someone check to see if autosoldnow.com reverse lookup is properly
configured? It says on dnsstuff, and dnsreport that reverse lookup works
but that it points to mail.autosoldnow.com, when I look up my other mail
servers most of them point to there-IP.providername.com 
I am asking because emails are still backing up in Exchange. :(

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