All I am saying is once "disable SMTP VRFY" was unchecked, it worked.
Either it was SMTP VRFY or they made a change to their DNS configuration. The failure occurred multiple times over multiple days, so I doubt it was a DNS problem (on our end anyway). Problem solved. This thread is done. ----- Original Message ----- From: "R. Scott Perry" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, March 30, 2004 10:11 AM Subject: Re: Re[3]: [IMail Forum] IMGate > > >It was not a DNS issue. > >It was SMTP VRFY > > No. The message said "Sender address rejected: Domain not found". If they > cannot find a valid domain ( > http://www.dnsstuff.com/tools/traversal.ch?domain=dantor.com&type=MX shows > that the MX record for dantor.com does indeed exist), it is a DNS > issue. "DNS issue" can mean anything from "they are not getting DNS > packets back" to "they are caching incorrect DNS packets" to "their > firewall temporary blocked UDP packets". But it is something with their > DNS that isn't working properly. > > It is, of course, possible that they are using SMTP VRFY (which would > really be silly, since almost nobody uses it) and are reporting an > incorrect error message. But given the error message, it's a DNS issue > (almost certainly on their end). > > -Scott > --- > Declude JunkMail: The advanced anti-spam solution for IMail mailservers > since 2000. > Declude Virus: Ultra reliable virus detection and the leader in mailserver > vulnerability detection. > Find out what you've been missing: Ask for a free 30-day evaluation. > > --- > [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
