Enforcing TLS by recipient and sender domain

Hello list, is there a way to enforce TLS dependent on the sender domain? Background: Many customers are using our SMTP infrastructure (opportunistic TLS is active). Now one customer wants to enforce TLS to a certain destination; can I do this without affecting all other customers (who might as w

Re: Enforcing TLS by recipient and sender domain

On Thu, Feb 12, 2009 at 07:13:19AM -0500, Wietse Venema wrote: > Urban Hillebrand: > > Hello list, > > > > is there a way to enforce TLS dependent on the sender domain? > > Yes. Use "check_sender_access" and "reject_plaintext_session". Thank