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-   -   Postfix sender IP address configurations (http://www.howtoforge.com/forums/showthread.php?t=62462)

DantePasquale 8th July 2013 05:07

Postfix sender IP address configurations
 
Hi,

My ISP gave me a new subnet and I think I changed everything IP and network wise (dns, hosts, web sites, mysql, apache, etc). Everything is working fine but sometimes emails being sent from my server are rejected due to no reverse DNS.

I finally got a detailed error report and is shows that the sending address is that of the server, not of the website.

In my case I have: My Server - inferno.cocoanet.us
One of my customers website mail server is mail.dantesinfernophotography.com

The rejection shows the IP of my server, inferno, not of mail..com!

Is this configurable in the /etc/postfix files?

Thanks,
Danté

pititis 9th July 2013 00:22

Just define the RDNS for the ip address of the mail server.

Code:

host 209.101.94.3
Host 3.94.101.209.in-addr.arpa. not found: 3(NXDOMAIN)

209.101.94.3 must point to inferno.cocoanet.us

You can do this usually using your isp control panel, if not, ask them.

Cheers


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