19 May
2025
19 May
'25
7:03 p.m.
It appears that Christian de Larrinaga via NANOG <nanog@lists.nanog.org> said:
The only case this would matter is if you are using an MUA/sender/client *authenticating* to an MTA with a certificate. 99.999% of email is one-way server TLS, not mTLS. LE certs will continue to work fine for SMTP.
maybe this answers my questions. I am not sure.
Is there any clear documenation of what is going on here?
Does this mail system connect to some other smarthost, and log into the smarthost using that certificate rather than a username and password? If it's not doing that, and it sure doesn't sound like it is, you're fine. R's, John