P.S. kclug.org's mail server is misbehaving and rejecting mail from my server. Can someone fix? Thanks. :/
kclug@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