Problem with mailserver claiming different IP after IP Migration

[hergy80]

We were required to switchover IPs from our datacenter, and now when I check my domain at dnsreport.com, I get the following error.

WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). This probably won't cause any harm, but is a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server.

domain.com claims to be host server1.domain.net [but that host is at 69.44.xx.xx, not 64.34.xx.xx].

The old IP is the 69.44.xx.xx and the new IP is the 64.34.xx.xx.

I cannot figure out where it is still getting the old IP from. I've checked the /etc/hosts files but only the new IP and the 127.0.0.1 local address was in there. I used the Migration tool, and I thought I did everything, but it looks like I'm missing something. Any help would be apprieciated. Its a RHES3 box.

Thanks!

 

[lloyd_tennison]

Did you have the datacenter change your reverse DNS? I will bet not.

 

[ntwaddel]

what did you do to switch all the ips? is there a migration tool?

 

[hergy80]

Actually, they haven't changed the reverse DNS (I've been waiting and it's getting a little unnerving now). I'll wait and see if that helps -- makes sense though. Thanks!

Yeah, there is a migration tool in WHM under IP functions.

 

[lloyd_tennison]

Reverse DNS can actually be changed in far less than 24-72 hours. Sometimes even 30 minutes before an update. Now of course, not everone gets the update that fast - but most do.

 

[hergy80]

It's been over 4 days now.. They seem to be messing up a lot of others too, their forums have been blazing over the IP migration.. Sooner or later I'm sure they will get around to it..

But the more I look at it, the more your reasoning makes sense. My server still has a reverse ptr to my old IP, so that's probably why (and here I am ripping my hair out looking through all the config files..) Hopefully that ends up being the case.

 

[lloyd_tennison]

If they do not get that done in rapid time, maybe you should worry about the rest of the
services that datacenter provides, especially since that one is so simple.