Hi,
how can I prevent internal users who run other mail clients (for example MS Outlook) to send mail to another internal users via Domino ?
Subject: Restrict SMTP
You probably want your server to receive anonymous SMTP inbound. Perhaps the easiest thing to do would be a software firewall on the server that denies access to port 25 inbound from your local subnet except for your internet gateway?
SMTP doesn’t pay attention to what kind of software you’re using so you need a different approach.
Subject: False sender
Keith, thank you for your response.My problem is that some users send mail to other users in our company but the sender is the name of someone else from our domino directory. I do not disable port 25 because it uses several servers to send notification messages. Can I solve the problem by LS ?
Subject: Still think this will work…
I think you need to look outside of notes for this solution. If you firewall, you can configure a rule that allows outbound smtp from your server and inbound to your server from only the other servers you choose. Since notes uses port 1352, this would restrict the end users to using only Notes to send email through your server while still allowing server traffic over 25.
Subject: Solved
Keith, thank you. I used firewall.