Email Issues.

[Steve Sandau]

Kevin Darcy wrote:
> You seem to be making a big assumption that your problems sending mail 
> to "certain areas of the country" are caused by something wrong in the 
> DNS that you publish to the world. Doesn't it seem more likely that you 
> can't send to these domain because *their* DNS is screwed up or 
> otherwise unresolvable? Could you give an example of a domain you're 
> having trouble with? What makes you think that the trouble clusters 
> around "certain areas", as opposed to just being random?
> 
<snip>
> 
>>Hello I am using Bind 4.9.5 I know I know I know. I am in the process of
>>updating these servers. I would however like to fix a problem before I
>>upgrade. I know I mentioned Email Issues in my Subject, but I really don't
>>think it is my mail servers. Basically I am having trouble sending to
>>certain areas of the country. I am not on RBL DSBL or any list for that
>>matter. 
>>	I really think that something has changed and I can't put my finger
>>on it. My Primary DNS server is 209.38.128.3 NS1.sdccorp.com and my
>>secondary is 209.38.128.4. NS2.sdccorp.com. I run two zones 209.38.128.xx
>>(255) and 206.83.107.xx (255) My mail servers are 209.38.128.31 and
>>209.38.128.11. These DNS servers have been working perfectly and now all of
>>a sudden they aren't. I am not sure of what tests I can run to show
>>validity. I have gone to DNSSTUFF.com and it has given me some warn, but
>>fails. So I am really confused. 

Some mailservers may reject mail from you since mail.sdcorp.com does not 
appear to have a reverse mapping. When I ask for a name to go with the 
IP 209.38.128.11, I get 0 answers in the reply.

Steve Sandau