[BlueOnyx:26904] Re: sendmail pipelining question

[Michael Stauber]

Hi Larry,

>    Yes, have it running on one of our boxes (it also defaults
> to accepting pipelining) but postfix is not available on all boxes.

Postfix is available on 5210R and 5211R and it's by far the better 
choice. It's much more resilient against those attacks and handles load 
in a much better fashion due to its modularity.

As for pipelining in Sendmail: As far as I know you can't turn 
pipelining off. You can just suppress that the SMTP greeting banner 
advertises that the server uses pipelining. A proper SMTP-client that 
conforms to standards would then not use pipelining, but a spammer still 
might try to use it just out of spite.

Again: This is something that just works better in Postfix.

-- 
With best regards

Michael Stauber