use commercial spam filtering service?

[Jeremy C. Reed]

David, thanks for your many answers.

> > Do you also pay to have your outbound mail relayed through their gateways
> > too?
> >
> 
> Nope.  Can't see any benefit with that.

A couple potential benefits (but not necessarily for you) could be:

- organizations don't want their own mail servers to be accidently 
blacklisted or somehow otherwise punished because one of their 
clients/members/employees sends some email (spam or legitimate) that is 
flagged by someone as spam. So they put the burden on their outbound 
relay. (Maybe that could be expanded by some to consider "legal" 
responsibility for mail sent from their organization.)

- some organizations are behind IP space that is already blacklisted so 
use third-party relay (for example some Verizon FIOS networks are 
blacklisted and also Verizon's own SMTP relays are blacklisted by some).


Anyone else have thoughts on that? (Or my original questions?)

  Jeremy C. Reed