Mailing List Message #95370
From: Vesse Michel <>
Subject: Re: PTR
Date: Sat, 28 Jun 2008 10:24:50 +0200
To: CommuniGate Pro Discussions <>
thank you Lyle,
please could you give me eg for my domaine MX = = + ptr NAT to CGPserver for the incomming messages and CGP server  NAT to IP public for Outbound messages

how add ptr on ?

i have also the same probleme for all domaines with other IP public

Vesse Michel wrote:
this is my config
Server OS: Microsoft Windows 2003
Server Hardware: x86 (32-bit)
Server Version: 5.2.3
MAPI Version:
IPv6 Support: Inactif
maindomain is

pat router externe is

FW from POP NAT to CGPserver
FW from SMTP NAT to CGPserver
FW from IMAP NAT to CGPserver

FW from POP NAT to CGPserver
FW from SMTP NAT to CGPserver
FW from IMAP NAT to CGPserver

for MX = = + ptr

the probleme is when i send email to AOL the email is not sending

in the email header i have :
Sending/Received: from ([])

i dont now why this is not the mx record of my domaine
[]and is it the good parameters



When you send email, it goes out the external ip address for the nat,
which is Add a ptr record for and AOL will
be happy.

If you want your email to go out via .99, you need to re-configure your
router to send all outbound traffic from via,
not just a couple of ports. When making an outgoing connection, CGPro
will use a random high-order port to connect to the SMTP port at the far
end. Your router rules want to forward only if the orginating port is
port 25(SMTP), which it won't be.


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