RE: [cobalt-users] Pros & Cons of change to Sendmail and can you do this on a Qube 3 ?

["Dan Kriwitsky" <list3@xxxxxxxxxxxxxxxxxxxx>]

> Was reading something at lunch and the writer said he 
> "believed" that Sendmail already supported what he was 
> proposing - configuring mail servers to drop e-mails from 
> servers whose IP does not match the FROM domain.
> 
> And then of course are there any negative ramifications of 
> doing this ? Obviously it will reject any sender email not 
> ID'ing the sending email server but is there legitimate email 
> that comes that way ?

Lots of legit mail I think. Even @juno.com comes from *.untd.net I think
is the domain. If you're a user on the road sending from some hotel you
will still have your mail program set to From foo@xxxxxxxxxxx and the
mail will be coming from *.hilton.com. Not everyone has access to a
remote SMTP. I send mail via my own server sometimes with my
@hilarious.com address as the reply. Also, the SMTP will often not match
the MX when you try to look it up. The mail server may be on a
completely different /8 for some companies as well.

-- 
C2003 Dan Kriwitsky

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