Welcome, Guest. Please login or register.
Did you miss your activation email?
Wednesday 30 November 2022, 11:04:01 am

Login with username, password and session length

The Latest Endian Firewall is now available for download HERE
14186 Posts in 4342 Topics by 6351 Members
Latest Member: edwardre
Search:     Advanced search
+  EFW Support
|-+  Support
| |-+  EFW SMTP, HTTP, SIP, FTP Proxy Support
| | |-+  mail for example.com loops back to myself
0 Members and 0 Guests are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: mail for example.com loops back to myself  (Read 7899 times)
arco
Jr. Member
*
Offline Offline

Posts: 5


« on: Thursday 26 November 2009, 10:50:32 pm »

Hi,

I have exchange 2007 and i'm forwarding all my internal mails  for outside through SMTP connector to Endian Firewall SMTP.
My mail server IP is configured on Endian Firewall which will recieve emails from internet.
when i'm sending a test from hotmail or any email to my mail server,it's returning back with the following error:
mail for example.com loops back to myself

anyone faced this problem and how to overcome it?

thanks.
Logged
gyp_the_cat
Full Member
***
Offline Offline

Posts: 81



WWW
« Reply #1 on: Thursday 03 December 2009, 10:23:23 pm »

I've come across this one before and it can be one of two issues and is more to do with strrict RFC compliance than a technical issue persay.

Issue 1
For example if the Endian is doing an MX lookup and it's getting it's own IP address back it will bounce email back to the sender as sending back to yourself.

Check your internal DNS servers are reporting the destination MX record correctly.

Issue 2
The next fix is more common, in your MS Exchange SMTP connector under delivery and then advanced, make sure that the Fully-qualified domain name box has a different value in it than the one your Endian is using.

Ie if Endian tries to send email to your Exchange and it greets it with the same EHLO name then it will assume it's the same box and not send it.

Hope this helps Smiley
Logged
Pages: [1] Go Up Print 
« previous next »
Jump to:  

Page created in 0.043 seconds with 19 queries.
Powered by SMF 1.1 RC2 | SMF © 2001-2005, Lewis Media Design by 7dana.com