Might I suggest that you also make certain you have a cname for each virtual server that points to the FQDN of your Imail PC.
-----Original Message----- From: R. Scott Perry [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 18, 2004 12:04 PM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] reverse DNS and virtual domains >I want to get my server setup correctly and want to setup reverse DNS >for these correctly. Reading the Ipswitch docs: >-------- >3. You will need a PTR (reverse-lookup) record that resolves the IP >address of your IMail PC to the Official Hostname of your IMail >domain. (Many large ISPs will drop your connection if they cannot >match your IMail hostname with a PTR record for your IP address.) >--------- Actually, that should read "You will need a PTR (reverse-lookup) record that resolves the IP address of your IMail PC to any hostname that resolves back to the IP address of your IMail PC". It's a good idea to have the reverse DNS be the same as the Official Host Name, but it isn't necessary. So the PTR for 192.0.2.25 could be anything.example.com, just so long as anything.example.com has an A record pointing back to 192.0.2.25. >This sounds like I just need to add two PTR records for each official >hostname vs. a PTR record for all of my domains? Is that correct? Correct. I'm sure there are some anti-spam activists that will block mail if the reverse DNS doesn't match some domain of their liking (HELO/EHLO most likely), but you almost certainly won't be able to get mail to them anyways (even if you jump through hoops for them, they still may reject your mail for other reasons). -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Catches known viruses and is 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/
