nanog mailing list archives
Re: Remote email access
From: Valdis.Kletnieks () vt edu
Date: Wed, 05 Feb 2003 08:30:46 -0500
On Wed, 05 Feb 2003 09:04:08 GMT, Michael.Dillon () radianz com said:
What would be the point? Well, if my MTA receives a connection on port 25 I could look up the source IP address in the LDAP directory to identify the owner. Since an LDAP directory can contain arbitrary information related to its entries, perhaps I could find out whether or not that source IP is registered as an SMTP server and also retrive the abuse email address of the organization who has registered this address.
Somebody (Christian Huietma?) did a survey, and 30% of the sites don't even have working PTR entries in the DNS. Why should you expect enough buy-in on updating LDAP entries to make the query worth trying? www.rfc-ignorant.org has a very large database of sites that can't even get things like 'postmaster@' and 'abuse@' *email* addresses correct. So you end up penalizing sites that don't have a clue, while the clued spammers will do this: % ldap add abuse_contact mailbox="abuse () whatever foo" % cat > ~abuse/.forward /dev/null ^D What have you won? -- Valdis Kletnieks Computer Systems Senior Engineer Virginia Tech
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Current thread:
- Re: Remote email access, (continued)
- Re: Remote email access David Lesher (Feb 04)
- Re: Remote email access Dave Crocker (Feb 04)
- Re: Remote email access John R. Levine (Feb 04)
- Re: Remote email access Andy Walden (Feb 04)
- Re: Remote email access Jack Bates (Feb 04)
- Re: Remote email access John R Levine (Feb 04)
- Re: Remote email access Andy Walden (Feb 04)
- Re: Remote email access John R Levine (Feb 04)
- Re: Remote email access Dave Crocker (Feb 04)
- Re: Remote email access John R Levine (Feb 04)
- Re: Remote email access Dave Crocker (Feb 04)
- Re: Remote email access Michael . Dillon (Feb 05)
- Re: Remote email access Valdis . Kletnieks (Feb 05)
- Re: Remote email access Jeff S Wheeler (Feb 05)
- Re: Remote email access Dave Crocker (Feb 05)
- WorldCom's DWDM capabilities/OC12 SONET vs DWDM Max's Lists (Feb 05)
- Re: WorldCom's DWDM capabilities/OC12 SONET vs DWDM David Barak (Feb 06)
- Re: WorldCom's DWDM capabilities/OC12 SONET vs DWDM Max's Lists (Feb 27)
- Re: WorldCom's DWDM capabilities/OC12 SONET vs DWDM Daniel Concepcion (Feb 27)