How do i get my reverse DNS fixed?

  • Thread starter Thread starter charles kuchar
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charles kuchar

Road Runner has blocked all email from my server as of two days ago. The
problem is 66.136.154.253 shows up as adsl-kansas city instead of
delasallecenter.org. Who do i need to get to to correct this problem or do
i need to enable DNS out going on my ISA server firewall? Help. Ace, are
you out there???? charlie
 
ck> Road Runner has blocked all email from my server as of
ck> two days ago. [...] Who do i need to get to to correct
ck> this problem [...] ?

In all probability, this is simply the effect on you of the new policy of AOL
and RoadRunner, that was adopted earlier this year, of treating the customers
of other ISPs as third-class citizens by simply refusing to provide SMTP Relay
service to the blocks of IP addresses that other ISPs assign to their
customers. (Ironically, the effect of this policy is actually to compel the
use of relay through third-party SMTP Relay servers - in stark opposition to
the widespread efforts to reduce unsolicited bulk mail, and to force its real
senders to shoulder as much as possible of its costs, by eliminating such
relays.)

In which case: This is not a DNS problem or a problem with _your_ machines;
and the person that you need to get to in order to correct the problem is the
person at RoadRunner who has the power to revoke this decision. Good luck.
(-:
 
In
charles kuchar said:
Road Runner has blocked all email from my server as of two days ago.
The problem is 66.136.154.253 shows up as adsl-kansas city instead of
delasallecenter.org. Who do i need to get to to correct this problem
or do i need to enable DNS out going on my ISA server firewall?
Help. Ace, are you out there???? charlie
Click to expand...

Hi Charlie! How's it going? Nice to hear from you again!

It seems this is a common issue with cable companies. One of my clients is
running a mail server on Comcast and, well, they don;'t block outbound port
25, but they did put their residential subscriber IP numbers in the RBLs and
also, as you stated, their IP shows a reverse of their own network, which
means if other mail servers are using Reverse DNS to block UCE mail, then
your mail will get blocked to those servers.

Not much you can do with that. The cable companies do that to block folks
from running services. I was able to telnet into your mail server (didn't do
anything once in it), so just to see if it responds, and it did, so that
tells me they don;t block inbound port 25, which is good for you, so you'll
still be able to receive mail. But don;t remember if you told me if you have
a static IP or a DHCP IP from them. If you have a DHCP IP from them, that
makes it difficult to have a consistent IP for your mail services.

Hope that explains it?


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
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