nanog mailing list archives
Re: question on ptr rr
From: Chris Adams <cmadams () hiwaay net>
Date: Sun, 8 Feb 2004 15:59:43 -0600
Once upon a time, Andrew - Supernews <andrew () supernews net> said:
If you're going to get picky about HELO names, then it's better to require that the HELO has an A record pointing to the connecting IP, rather than look at PTR.
That isn't necessarily a good test; for example, we've got a couple of servers in a cluster. One IP pointed at the cluster is mail.hiwaay.net, and that is what is used in HELO/EHLO when making outbound connections, but the connections don't come from that IP. They come from the cluster member's IP so that when we get a complaint with sending IP, we don't have to look through the logs for the whole cluster to find the offender. -- Chris Adams <cmadams () hiwaay net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
Current thread:
- Re: question on ptr rr, (continued)
- Re: question on ptr rr Paul Vixie (Feb 07)
- Re: question on ptr rr Randy Bush (Feb 07)
- Re: question on ptr rr Sean Donelan (Feb 07)
- Re: question on ptr rr Steven M. Bellovin (Feb 08)
- Re: question on ptr rr Paul Vixie (Feb 08)
- Re: question on ptr rr Randy Bush (Feb 07)
- Re: question on ptr rr Paul Vixie (Feb 07)
- Re: question on ptr rr Sean Donelan (Feb 07)
- Re: question on ptr rr Paul Vixie (Feb 08)
- Re: question on ptr rr Andrew - Supernews (Feb 08)
- Re: question on ptr rr garrett.allen (Feb 08)
- Re: question on ptr rr Chris Adams (Feb 08)
- Re: question on ptr rr Andrew - Supernews (Feb 08)
- Re: question on ptr rr Sean Donelan (Feb 07)
- Re: question on ptr rr Lou Katz (Feb 08)
- Re: question on ptr rr Valdis . Kletnieks (Feb 08)
- Re: question on ptr rr Paul Vixie (Feb 07)
- Re: question on ptr rr Niels Bakker (Feb 09)
- Re: question on ptr rr Robert E. Seastrom (Feb 09)
- Re: question on ptr rr Daniel Senie (Feb 09)
- Re: question on ptr rr Randy Bush (Feb 09)
- Re: question on ptr rr Valdis . Kletnieks (Feb 09)
- Re: question on ptr rr Arnold Nipper (Feb 09)