Hi Ken,

sendmail is very flexible on this. It really depends exactly what you want
to do. It's not implemented
in rulesets but by

Local Domains (normally in /etc/mail/relay-domains or similar) - describes
which domains sendmail will accept mail for local delivery
Domain Routing (normally in /etc/mail/mailertable or similar) - describes
forwarding rules for particular domains
Spam Control (normally in /etc/mail/access or similar) - describes which
domains/IPs can relay mail through the server.

The locations of these files will be different on MPE (I'm looking at a
Linux system here) - maybe in PUB.SENDMAIL??

There can be two possible scenarios you are describing here...

1. I want to allow only mail for certain domains to "pass through" (ie be
relayed through) sendmail
2. I want to disallow mail for certain domains to "pass through" sendmail.

Option 2 is much easier to implement than option 1 IMHO - you just use
Domain Routing to send the mail to /dev/null ($NULL) via a little script.
You'd need a list of domains to junk mail for.

HTH.

Mark W.

"Born, Ken" <[log in to unmask]> wrote in message
news:9jp7t002nh9@enews3.newsguy.com...
> Greetings,
> Working with Sendmail to determine if I could filter or restrict emails
from
> sending and receiving?
> Can I allow which domains can pass through Sendmail ?
> Can I restrict which domains can send through Sendamil ?
>
> Looking through the Sendmail book and the rulesets and did not determine
if
> Sendmail has this capability.
> Any suggestions would be appreciated.
>
> or would it be better to have the firewall setup to send/receive only
> particular domains on the internet ?  I asked the network guy and he
doesn't
> believe we could restrict certain domain emails?  Is he correct ?
>
> Thanks....
>
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