Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I have an ActionTec MI424-WR router that has 5 external IP addresses bound to it.

One of the servers behind the router is a mail server on an internal address. When the mail server receives mail, it is responding on x.x.x.52. Which the router correctly port forwards to the internal machine.

However, when it sends mail, it is doing so on x.x.x.50. There are two problems with this. First, the .50 address is listed in a spam database (It was that way when the IP was assigned to me). Second, .50 isn't my mail server so I don't have a reverse DNS pointer set up for it. I do for the .52 address.

What I need is for my mail server to use the .52 address when it sends traffic out.

Ideas?

share|improve this question
add comment

2 Answers

Try instructions from page 67: http://support.actiontec.com/doc_files/MI424WR_Rev._ACD_User_Manual_4.0.16.1.56.0.10.11.x_v6.pdf

share|improve this answer
    
Close. Page 107 had the right info. +1 for adding the link to the manual. –  Chris Lively Dec 10 '10 at 17:02
add comment
up vote 0 down vote accepted

I figured it out. Apparently I needed a static NAT record to be setup in the router. When this was configured the internal address now broadcasts on the correct external IP.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.