[no subject]

> On Wed, Aug 18, 2004 at 09:40:00AM -0400, Matthew Brown wrote:
> > No, no.  Not a good thing at all.  It doesn't matter if I have a 
> > sendmail server at home or not.  Blocking Port 25 prevents me from 
> > sending email from my MUA through my SMTP server located out there 
> > elsewhere on the Net.
> 
> No, it doesn't.  For that, you should be using secured submission on
> 587, which isn't being blocked, AFAIK.

There's no real-world advantage to using TCP port 587 for submission versus
just doing SMTP AUTH / SMTP STARTTLS (pick yer poison ;-) over TCP port 25.  
Sites that block 25 are now starting to block 587 as well (and Bellsouth is
a good example of one which blocks both).

Usage of TCP port 587 for mail submission just encourages the arms-race
cycle of block port - move service - block port - move services. It doesn't 
actually solve any problems.

later,
chris


</pre>
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