Thanks a lot Sven. This is some great information below!
I definitely want to look at 8.13.X soon. Out of interest, do you know if you can finally do something like this in the virtusertable? I know that was something they were really looking at but I've been caught up more in some of the RBL work for anti-SPAM for the last few months than I planned.
[EMAIL PROTECTED] error: Nouser No one named bob works here anymore?
Happy New Year,
KAM
----- Original Message ----- From: "Sven Willenberger" <[EMAIL PROTECTED]>
Sendmail 8.13.x has new features (and there are patches for 8.12.x) that can throttle such connections. They are:
A) GreetPause - wherein the server delays the initial response x seconds. Any server that starts sending traffic before this response receieves an error message (designed to stop those trojaned/virus mailservers that blast out spam)\
B) RateControl - controls how many connections per minute for each unique ip address
C) ConnControl - controls how many simultaneous connections per given ip address
These are all controlled via access files and can be configured with defaults and with ip specific exceptions;
The relevant .mc file entries: FEATURE(`greet_pause', `5000') dnl 5 seconds FEATURE(`ratecontrol', `nodelay', `terminate') FEATURE(`conncontrol', `nodelay', `terminate')
example access lines:
GreetPause:127.0.0.1 0
ClientConn:127.0.0.1 0
ClientConn: 10
ClientRate:127.0.0.1 0
ClientRate: 15
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