Author: Bill Hacker Date: To: Exim users list Subject: Re: [exim] Report of new spam technique
Stephanie wrote:
*SNIP* >
> And ditto for SWBell, SWBell reported that port 25 is blocked for all
> their customers in Houston in December but my stepdad's office network
> has no problem at all connecting via port 25 to his domain host's
> server (mine) to send out mail.
>
Not a surprise. Business broadband usually offers more flexibility w/r
rulesets, as most businesses
will utilize an off-site mailserver.
The quid pro quo is that the carrier reasonably expects the SME staff or
SI to
keep their own house clean.
> Plus I still see tons of SWBell zombies sending out directly thru port
> 25, here's a few entries from a dictionary attack earlier tonight:
*SNIP*
It isn't really an issue of whether port 25 is intercepted by
'connectivity' ISP's.
In and of itself that doesn't slow down spambastard as much as it
inconveniences others (not a lot in either case).
It is about *managing access* to port 25 (and all other smtp ports).
