Protecting a list w sendmail tweeking

[Mark Rauterkus <mrauterkus @ sportsurf . net>]

Hi,

My ISP gives me some good advice and they passed along this info about 
protecting a list. I really don't want to mess with sendmail -- but I'd 
like to know what others think, and I'd like to know what the heck is 
going on here.

Using: Unix, virtual server, BSD, Majordomo 1.94.1, sendmail. 

--- snip

To further improve security, add the
following line to your sendmail.cf file:

Opnoexpn,novrfy

The line probably looks like this already:
Opauthwarnings,needmailhelo

When you are done, it will look like this:
Opauthwarnings,needmailhelo,noexpn,novrfy

---- end snip

Thanks for your insights and opinions. 

--------------
Mark Rauterkus, Publisher, S.S.S.

mrauterkus@sportsurf.net
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