[Administrivia] TLUG's mailserver has no rDNS

[waltdnes-SLHPyeZ9y/tg9hUCZPvPmw at public.gmane.org]

  Up until Friday the list's email came from 206.108.5.1.  Then it
started coming from 206.108.5.40.  Here's a quick scan of 206.108.5.0/24

1.5.108.206.in-addr.arpa domain name pointer dsl.ss.org.
7.5.108.206.in-addr.arpa domain name pointer atlas.iplink.net.
10.5.108.206.in-addr.arpa domain name pointer gw.cek.com.
14.5.108.206.in-addr.arpa domain name pointer mail.gredico.ca.
17.5.108.206.in-addr.arpa domain name pointer mail.cottonreel.com.
22.5.108.206.in-addr.arpa domain name pointer ns.wenzel.net.
26.5.108.206.in-addr.arpa domain name pointer cscan.ca.
29.5.108.206.in-addr.arpa domain name pointer mail.sources.com.
57.5.108.206.in-addr.arpa domain name pointer gw.cmmxyz.com.

  Oops, nothing for 40.5.108.206.in-addr.arpa.  Because my blocking
rules reject email from machines with zip/zilch/nada rDNS, I started
seeing a marked reduction in the size of my daily mailspool.  I figured
something was wrong and checked my logfiles.  Seeing all the rejects, I
whitelisted ss.org as "MAIL FROM:".  For obvious reasons, the rDNS
whitelisting no longer works<g>.

-- 
Walter Dnes <waltdnes-SLHPyeZ9y/tg9hUCZPvPmw at public.gmane.org>
Email users are divided into two classes;
1) Those who have effective spam-blocking
2) Those who wish they did
--
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