Walter speaks the gospel.  Check it out.  Perhaps it was a large 
attachment or some such thing.

We had already turned off open relay.  Did you?

Then we upgraded our SMTP server to Domino 6 for two reasons.
1)  Feature to not accept email if the recipient is not a valid user. This 
was killing our server.  We have 4 mail.box files.  Each were getting 
about 1,000 emails a day to bogus addresses.  It was to the point that we 
had to empty these out on a daily basis or no email got in or out.
2)  Blacklist support.  I don't know if that was a performance boost, but 
it sure was sweet to stop several thousand bogus emails a day.  And not 
one complaint about a valid email unable to arrive.

Rob Berendt
-- 
"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." 
Benjamin Franklin 

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