On 23 September 2002, Mike Meredith said:
> I'm thinking of enabling :-
>
> deny senders = :
> condition = ${if ! eq {$recipients_count} {1} {yes}{no}}
> message = Invalid use of null sender
>
> to block mails with "<>" as the sender address *and* multiple
> recipients. The reason for this being the occasional mail virus/worm
> that uses this sender address.
Ooh, clever idea! Not sure what the RFCs say about this, but my
intuition tells me that <> with multiple RCPTs is bogus.
ote that eq is for string comparisons -- I think the condition should be
coded either
${if ! =={$recipients_count}{1} {yes}{no}}
or (IMHO better)
${if >{$recipients_count}{1} {yes}{no}}
Also, I belong to the "precise and useful SMTP error messages" school of
thought, so I would use
message = cannot have multiple recipients with null sender
instead. Not that anyone will ever actually read that message, but it
can't hurt to be clear and explicit.
Greg
--
Greg Ward <gward@???> http://www.gerg.ca/
"Question authority!" "Oh yeah? Says who?"
