Outlook 2003 question

[mattjurado]

I have a Postfix server rejecting messages from a terminal server using Outlook 2003. No matter what user uses Outlook, the messages are rejected from the Postfix server. The error references that I don't have an AAAA (IPv6) record. Aside from setting up that Linux box to handle IPv6, is there anything I can do to tell Outlook to not format its messages using IPv6? Or am I looking at this wrong, and it is the Windows 2000 OS that is adding the IP headers in IPv6? I can't find any documentation on Outlook 2003 and IPv6 headers.

Matt

Please always take the time to backup important data and verify that backup, before making any changes suggested.

 

[mattjurado]

I'll also add that I have duplicated this on an XP Pro workstation running Outlook 2003. All of the 2002 Outlook clients work fine when using this postfix server for SMTP. It is just the Outlook 2003 clients. And the 2003 clients send fine to most domains, it is an internal domain that Postfix cannot resolve because there is no AAAA record for it. Looking for info or a way to change how Outlook 2003 adds its IP headers to a message.

Matt

Please always take the time to backup important data and verify that backup, before making any changes suggested.

 

[mattjurado]

Anything?

Matt

Please always take the time to backup important data and verify that backup, before making any changes suggested.

 

[mattjurado]

Okay, turns out the error I was getting from Postfix was wrong. Postfix would tell me I need an AAAA record to deliver to an internal domain. Postfix just had no clue how to find a domain that was internal to the organization. Bind had no issue finding it, I could telnet to the internal domain after I made a pointer in /etc/hosts, just Postfix couldn't find it. The solution was to define a similar pointer in /etc/postfix/transport that said

domain.local smtp:[IPAddressOfServerForDomain.Local]

I then had to make an entry in /etc/postfix/main.cf that said

transport_maps = hash:/etc/postfix/transport

Run the postmap command on /etc/postfix transport, and I was done.

Turns out, Office 2002 does headers differently that 2003, and all other mail clients for that fact. When a 2002 message was sent to my internal domain using Postfix, no headers were added at all! Somehow Postfix delivered it. But using 2003, Outlook Express, or Thunderbird, when Postfix received the message it needed an entry in the transport table to deliver it.

Just posting this in case someone googles this and has the same problem.

Matt

Please always take the time to backup important data and verify that backup, before making any changes suggested.