[GRLUG] Comcast and blocking port 25 delivery

[Greg Folkert]

At this point, Comcast is 100% blocking any port 25 traffic to and from
anything out side its network to or from anything inside its network.

They say its for my own benefit.

I just changed my "pop before send" server to use an alternate port as
well as the standard port.



GRLUG might also want to get the PTR (Reverse arpa record) record
changed properly, unless its shared hosting.

209-254-21-14.ip.mcleodusa.net ([209.254.21.14] helo=mail.grlug.org)

uno:/etc/exim4# host 209.254.21.14     
14.21.254.209.in-addr.arpa domain name pointer 209-254-21-14.ip.mcleodusa.net.

uno:/etc/exim4# dig 14.21.254.209.in-addr.arpa

; <<>> DiG 9.5.0-P2 <<>> 14.21.254.209.in-addr.arpa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32237
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;14.21.254.209.in-addr.arpa.	IN	A

;; AUTHORITY SECTION:
21.254.209.in-addr.arpa. 3600	IN	SOA	ns1.mcleodusa.net. hostmaster.mcleod.net. 2008081904 3600 600 604800 3600

;; Query time: 26 msec
;; SERVER: 208.64.37.170#53(208.64.37.170)
;; WHEN: Wed Nov 12 13:51:15 2008
;; MSG SIZE  rcvd: 115


This would improve over all SPAM classifying for the list and any other
GRLUG mail.
-- 
greg at gregfolkert.net
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