- wrote:
--- On Tue, 11/24/09, Tilman Schmidt <[email protected]> wrote:
Am 2009-11-23 21:38 schrieb -:
I too limit connections to one, and one per 5
minutes. Should remotes violate that, they get two
warnings (ICMP admin-prohibited), and if they're too eager,
they fall into my TCP TARPIT.
I wonder. Do you have any data on how typical mail server software
reacts to that sort of policy? What does, for example, a Sendmail or
Exchange server in default configuration do if it tries to deliver two
mails to a destination server, the first one succeeds, and the second
one fails with "administratively prohibited"?
Which would only happen if they tried to open two separate TCP sessions within
the 5 minute window.
Which will almost certainly happen regularly if anyone joins a mailling
list that is slightly busier than this one.
--
Les Mikesell
[email protected]
_______________________________________________
NOTE: If there is a disclaimer or other legal boilerplate in the above
message, it is NULL AND VOID. You may ignore it.
Visit http://www.mimedefang.org and http://www.roaringpenguin.com
MIMEDefang mailing list [email protected]
http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
