On 2010-04-22 5:12 AM, LAURENCE BONSATO wrote:
> But they have a problem with their domain being blacklisted all the time,  
> and it looks as though, as sad

There are 2 most likely reasons for this:

1. their anti-spam appliance is MIS-CONFIGURED to BOUNCE mail detected
as spam, rather that either REJECT it at smtp time, or accept then
TAG+DELIVER it.

Anyone who BOUNCES SPAM will, eventually, get blacklisted if their
volume is high enough.

AND/or

2. they are NOT rejecting REJECT invalid recipients at smtp time.

-- 

Best regards,

Charles

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