Anti-spam SMTP mods
Brian Densmore
DensmoreB at ctbsonline.com
Wed Mar 3 17:19:33 CST 2004
>-----Original Message-----
>From: Charles Steinkuehler
>
>Has anyone on-list implemeted SPF (http://spf.pobox.com/) or one of the
>other 2 methods currently being proposed to close the loopholes in SMTP
>that allow forging of the envelop sender/from: header?
>
>I'm thinking of setting this up on my personal mail server, but am
>wondering if it will be worth the hassle.
I have a simple solution on my mail server. Only local users can create mail
locally, and I only allow trused users to send mail. Now granted if a
local user wanted to spoof the headers I don't know that my server is
smart enough to prevent it. My old rules in postfix would have altered the sender info to state the
email headers as forged. I haven't written any custom rules for exim yet (just downloaded the
documentation this morning).
Is the SPF implementation hard? I may look into as my new lean mean debian server is using less
than 300 MB total installed software so far (web+mail+webmail).
Brian
More information about the Kclug
mailing list