Sending email from a different IP

I’m in something of a panic now.

Seems that I have got a bad reputation at Senderbase on my server. Yes, I know I need to resolve the issue and I have been digging around at that for the past 6 hours.

But I need to resolve the issue very quickly because as expected some of my customers are getting a little peeved, to say the least.

Is there a way I can set a different IP number (there is a spare one on that box at the moment) for outgoing email?

Desparate for some fast help,


CentOS Linux 5.7
Webmin version 1.570
Virtualmin version 3.88 Pro


Well, the issue is that if one IP address was marked as “bad” – chances are that the same thing will occur to any other IP address used for sending email.

So, if you simply switch IP addresses, and don’t actually resolve the problem… you’d likely just get more IP addresses banned, making this all harder to fix :slight_smile:

However – email goes out on the primary IP address of your server.

If you wish for email to go out on a different IP address, you can change the primary IP address (usually eth0) on your server to be an alternate IP.


Thanks Eric,

Yeah, I know I would have to fix it properly, I was hoping for a quick fix as a temporary measure whilst I did so.

I have now found out why the bad reputation. It seems that Senderbase is now doing some extra checks. The PTR record for the server must match the HELLO string. (maybe that’s not new but I have just been getting away with it)

In my case the “HELLO” is the FQDN of the server but the PTR is that of the company the server is owned by.

I’ve done some digging and I think the best way forward is to get the reverse updated.

If anyone has any thoughts about about a faster or better way to sort this, please feel free to chip in.

Thanks for reading.


Yeah, the company that owns it is generally your ISP/provider.

Fixing that is usually just a matter of giving them a call to tell them what you’d like the PTR set to.


Thanks Buddy,

Well that is what I have done, well I did it some time ago but didn’t get back here to update, sorry.

Now I just have to wait for the reputation to settle again. And put up with the complaining customers. I have to be honest and admit that the whole issue was caused by my lack of knowledge in the first place.