He isn't saying it needs a reverse address. He's saying that the reverse address needs an MX record. Roman Volf Keystreams Internet Solutions volfman@keystreams.com Mike Walter wrote:

Arnold, I am surprised you don't have problems sending to AOL as well. They don't accept email from servers that do not have reverse addresses. I don't accept email from severs without reverse addressing.

Mike Walter, MCP 3z.net a PCD Company <http://www.3z.net> "When Success is the Only Solution t h i n K 3z.net"

-----Original Message----- From: Arnold Nipper [mailto:arnold@nipper.de] Sent: Monday, April 05, 2004 5:03 PM To: NANOG Subject: Mailserver requirements

Today I run across a MTA which refused to accept mail because it could not detect an MX record for the reverse mapping of the IP address of the server which tried to deliver mail. Is this correct?

Or: if A is the IP Address of server trying to deliver mail, does mx(reverse(A)) have to exist?

-- Arnold

-- Roman Volf Keystreams Internet Solutions volfman@keystreams.com