[plug] still problem with bad listing for domain

[Brad Campbell]

On 18/08/10 07:21, Jon L Miller wrote:
> I’m still having issues with the mt domain name being on some list(s)
> because of “bad reputation”. I would like to know how I can go about
> resolving this? I’ve changed the firewall on the Cisco router to not
> allow packets out unless they are going via smtp.

I don't know if it's any help, but I had this problem recently twice.

The first time was when I was reconfiguring the server, and the mail servers saw my HELO change 
twice in 5 minutes (I stuffed up setting the hostname and mailname).

The second time took a _lot_ longer to track down. My server is multihomed, but I only had a reverse 
dns on one of the ip's. Intermittently (and without rhyme or reason) exim would send from the second 
interface and my mail would be rejected for bad reputation. I bound exim to the first interface, 
*and* set an appropriate reverse on the second interface ip address and it's been all good since.

The only way I found out about the first issue was to send a polite e-mail to the owners of one of 
the block lists. They kindly scanned the logs and gave me quite a detailed rundown on what had 
happened to cause my server to be listed. Very helpful in fact.

The second one took a lot of tcpdump sniffing to figure out what was going on. Had I read the 
rejected mail headers properly it would have happened a _lot_ faster :)

Brad