Re: DNS- Mail Issue

[mro2 <lists@roth.lu>]

Andre Lorenz wrote:
> Hi,
>
> I've several debian etch servers with latest updates running. This 
> servers have  public IP-addresses.
> on server a is my primary public DNS (YYY.Y.YYY.YYY) for serveral 
> Domains running. This DNS is also apporved and verified by DENIC / 
> INTERNIC / DTAG .....
> on my second server with an other pub. IP (XXX.X.XXX.XXX) i've running 
> a qmail-server for all Domains.
>
> There is following problem:
> If i send to diffent domains mail, i'm getting sometimes for some 
> domains following error :
>
> 195.4.92.211 does not like recipient.
> Remote host said: 550 inconsistent or no DNS PTR record for 
> XXX.X.XXX.XXX (see RFC 1912 2.1)
> Giving up on 195.4.92.211.
>
> in this case it is freenet that is causing the problem.
>
> i've already checked my dns-setup for typos, or inconsistent entries 
> but i cand find them. Does i need a special setup on ?
> or could this be a qmail-problem.
>
> Thanks for help.
Your DNS setup is not the problem. As far as I see you use a 
"dialup"-type of IP address to send mail. With that you have a very good 
chance of being blacklisted anyhow. Use the smarthost of your ISP to 
send mail or ask them to configure a correct PTR record for your IP 
address. Since it is not YOUR IP address, you cannot do anything and 
also this has nothing to do with your local DNS, I hope that is clear... 
(So what IS the PTR record anyway and why doesn't it match?? "dig -x <ip>")