Vicious Circle

Steen, Glenn Glenn.Steen at AP1.SE
Mon Mar 7 10:04:36 GMT 2005


> -----Original Message-----
> From: MailScanner mailing list 
> [mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf Of Dave Goodrich
> Sent: den 5 mars 2005 18:10
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Vicious Circle
> 
(snip)
> 
> I am at a loss, the root of the issue is I have 100k messages a day,
> some just *might* be legitimate address misspellings, I can't drop all
> bounces. But the vast majority are trash.

I think you have a "fault" in your reasoning here. The responsibility
(and thus requirement to produce bounces) for a message is not yours
until after you've accepted the message. So if you do, as many here have
already recommended, reject (with a 550) any unknown recipients/domains,
then the resposibility to generate a NDN/NDR would still be _the sending
MTAs problem, not yours_.
So there really is no reason for you to avoid this strategy, there is
little -> no risk that "valid but misspelled" messages would disapear...
Anyway... That would be THEIR problem, not yours;).

Spammers don't seem to use real MTAs so this strategy is pretty
effective in reducing spam volume, and it effectively removes the
risk that you would be used for generating "backwash" or NDN-spamming.

-- Glenn
> 
> Whats a sysadmin to do?
> 
> DAve
> 
> --
> Dave Goodrich
> Systems Administrator
> http://www.tls.net
> Get rid of Unwanted Emails...get TLS Spam Blocker!
> 
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