[Elecraft] Earthlink ISP problems

[Denis Dimick]

I disagree,

Port 25 is used for INCOMING smtp (mail) traffic. Not out-going. 

Out-going traffic uses any port to connect to the remote servers port 25. 
Earthstink was not blocking this traffic, they only blocked incoming 
requests to your port 25. This does next to nothing to stop SPAM.

I would bet that it had more to Earthstink re-writing the mail headers 
then stopping SPAM..

If you really want to stop spam, go look at a product called TMDA, google 
will find the site. Have only gotton once e-mail spam in over a year of 
using it..

Denis

On Sat, 19 Apr 2003 k4wtf@enterzone.net wrote:

> 
> 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
> 
> 
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