[plug] Blacklisted mail server?

[Adrian Woodley]

These stats are from 1 of our 8 mail filter servers for the past hour:

====================================================
Incoming Mail Category  	%  	# Messages
Total Attempted Messages 	318283
 
	 Stopped by Reputation Filtering 	 
	77.46 	246544
 
	 Invalid Recipients 	 
	9.49 	30220
 
	 Spam Messages Detected 	 
	7.88 	25093
 
	 Virus Messages Detected 	 
	0.08 	240
Total Threat Messages 	94.91 	302097
 
	 Clean Messages Accepted 	 
	5.09 	16186
====================================================

Nearly 95% of email delivered to us is spam. You don't want to see the stats for the whole day...

Adrian

On Fri, 05 May 2006 19:29:59 +0800, Ben Jensz <plug at jensz.id.au> wrote:
> To quote Wietse - "Junk mail is war, RFC's do not apply".
> 
> It can be useful to drop known "bad" client IPs before they get to the
> actual SMTP service, as then it uses less resources on your mail server
> systems as you don't have the overhead of having used up one available
> SMTP connection to a host that you're only going to tell to sod off
> anyway.  Considerations such as this do come into play when you're
> dealing with large volumes of email like ISP's do.
> 
> That said, there have been issues with the Sorb's DUL list during the
> last week, which have lead to ranges being incorrectly listed.  So
> actively giving a reject response (rather than just dropping the
> connection outright) does at least give the sending client an indication
> as to what is wrong.
> 
> 
> / Ben
> 
> 
> Mike Holland wrote:
>>
>> Isn't that just plain wrong?  Both with internet protocol standards,
>> and ethics.
>>   They should give an error message with explanation first. e.g.
>> postfix says:
>>
>> 554 Service unavailable; Client host [xxx.xxx] blocked using
>> >     dul.dnsbl.sorbs.net; Dynamic IP Addresses See:
>> >     http://www.sorbs.net/lookup.shtml?[xxx.xxx]
>>
>> So at least the poor guys know whats happening.
>>
> 
> _______________________________________________
> PLUG discussion list: plug at plug.org.au
> http://www.plug.org.au/mailman/listinfo/plug
> Committee e-mail: committee at plug.linux.org.au
-- 
Adrian Woodley

~#
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