Hello, KC!

[David Ambs]

> P.S. kclug.org's mail server is misbehaving and rejecting mail from my server.
> Can someone fix? Thanks. :/
>
> <kclug at kclug.org>: host kclug.org[139.146.133.42] said: 554 Service
>    unavailable; Client host [24.145.163.67] blocked using dnsbl.sorbs.net;
>    Dynamic IP Addresses See: http://www.sorbs.net/lookup.shtml?24.145.163.67
>    (in reply to RCPT TO command)

Just relay it through the Earthlink SMTP. Most all dynamic IPs are blocked 
now a days in dnsbl utils. There's rarely a reason to directly relay from 
your dynamic address. Check the DS line in sendmail.cf

-dave