reverse DNS issue

[ericwisg]

Hi all,

Recently, I have this reverse dns issue that the recipient end is rejecting mails from my side. After conversing with the recipient, it was found the ip address of my antispam box is different when their server did a reverse lookup of my box. The ip address they received happened to be my firewall. I did an online reverse lookup of the ip address my recipient received and it reported the correct server hostname.

Before you can advise me what I can do, I probably need to tell all my current setup. I have a firewall facing the external world. Sitting behind the wall is my antispam appliance . My incoming/outgoing mails are routed through the antispam box.

I am total noob about this and seek anyone's advice what I can do.

Appreciated.

 

[aich69]

I'm no expert in this department but it sounds to me like you need to look at your MX record setup possibly. I touched on this subject a little in the last place I worked when we changed ISP's and had to update our MX record to make sure the mail was routed correctly.

You're going to have to do some googling on this one 'cos as I say, I'm no expert but I believe this might be a good place to start...

I used to have a handle on life... but it broke. Cpt. Red Bull