SRV records (was Re: [Mimedefang] OT: www. and "lazy users")

[Matthew.van.Eerde at hbinc.com]

DFS wrote:
> If an ISP does not wish to permit this kind of thing, it could
> restrict DNS queries to its own DNS servers, and they could return a
> record of smtp-out.paranoid-isp.com for all SRV queries for SMTP
> servers.  This would achieve the goal of having outbound mail flow
> through the ISP's servers.  (I suppose if you somehow knew the IP
> address and port of a listening external SMTP server, you could
> connect, but that wouldn't be feasible for spambots.)

IIRC, AOL actually intercepted all outgoing TCP connections to port 25 for a time.

-- 
Matthew.van.Eerde (at) hbinc.com               805.964.4554 x902
Hispanic Business Inc./HireDiversity.com       Software Engineer