Have you consulted the manual of your MTA as to how you can do so? It is
possible, but you haven't told us what you are using or what have you
tried so far. You can also use MTA-STS, but that will only work with
senders that look for and enforce policies.
This is an operational mailing list for operational issues, not your own
private search engine.
On 7/18/24 2:36 PM, Jeff Pang via mailop wrote:
Can I setup mailserver to accept messages via sdl/tls only from other
MTA? How to disable peer MTA send me plaintext mail?
Thanks
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