[Elecraft] Earthlink ISP problems

[k4wtf@enterzone.net]

On Fri, 18 Apr 2003, Denis Dimick wrote:

> 
> EarthStink also blocks port 25 traffic.. You must use their mailservers to 
> get your mail..
> 
> I also dont use them..
> 
> Speakeasy.net   Linux friendly and the techs have a clue.

NSP Security Hat=ON

Just to clarify, for dialup users, the Best Current Practice is for
providers to block outbound port 25 traffic or to force-proxy that traffic
to their mailservers.

This will NOT prevent a user for retrieving email from a remote mailserver
however.  Mail retrieval occurs on TCP port 110 for POP2/POP3, and TCP
port 143 for IMAP.

The port 25 blocks are put in place to prevent SPAMMERS from using a
throw-away "dialup" account to inject mail directly into a remote
mailserver.  If only more providers would follow BCP, we would not have
the spam problems that we have now.

I'll take my NSP Security hat back off now.

73 de John - K4WTF
K2/100 #2490