Mailing List Message #13027
From: Joe Laffey <>
Subject: Re: AOL-DNS Problems
Date: Thu, 15 May 2003 20:05:04 -0500 (CDT)
To: SIMS Discussions <>
On Thu, 15 May 2003, Glenn Edwards wrote:
>     I run a small mail server for my school on an old Performa.  I use
> Macjordomo for a listserve for the school.  I have a few teachers who
> have AOL at home and any mail from my SIMS server does not get to them.
> I have been jumping through the AOL hoops trying to get them to unblock
> my server and after several phone calls to them (on my dime, no 800
> number) I finally got to someone who told me that reverse DNS is not
> working properly for my domain name of  My DNS is hosted
> by  I am a school principal just trying to provide for my
> teachers a listserve where messages can be sent back and forth easily.
> It has been working well for over 2 years now until AOL changes
> something that keeps school mail from getting to my teachers who happen
> to be AOL subscribers.  By the way I was told that AOL uses the most
> advanced spam fighting features in the world.  What do I need to do to
> get reverse DNS working to suit AOL.  Mail is working great to all other
> domains except the good old AOL.

The name resolves to, (with an A record) but
the ip resolves to
with a PTR record.

The records show that Charter handles that ip:

Charter Communications CHARTER-NET (NET-24-159-0-0-1)
Charter Communications LBN-TN-24-159-016 (NET-24-159-16-0-1)

CustName:   Charter Communications
Address:    12405 Powerscourt
City:       St. Louis
StateProv:  MO
PostalCode: 63131
Country:    US
RegDate:    2002-02-16
Updated:    2002-02-16

NetRange: -
NetName:    LBN-TN-24-159-016
NetHandle:  NET-24-159-16-0-1
Parent:     NET-24-159-0-0-1
NetType:    Reassigned
RegDate:    2002-02-16
Updated:    2002-02-16

TechHandle: BJK21-ARIN
TechName:   Byrne, Kevin J
TechPhone:  +1-314-288-3889

OrgAbuseHandle: ABUSE19-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-314-965-0555

OrgTechHandle: BJK21-ARIN
OrgTechName:   Byrne, Kevin J
OrgTechPhone:  +1-314-288-3889

Presumably I would contact and tell them you
would like a PTR record for to resolve to Then put as the server name in
the SIMS general config.

Good luck getting Charter to do this. They MIGHT, but they might just
ignore you. Ah, the beauty of little competition...

Joe Laffey              |  Want to convert subnet masks between different
LAFFEY Computer Imaging |  notations, or figure the number of IPs in a block?
St. Louis, MO           |  Whatmask-It's FREE -
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