tree 13e07776f0cd3dfc8c52b8266a454e0320b60603
parent 79b87222821716fb0b68fc78382ece40f053ebbf
author Rob Mueller <robm@fastmail.fm> 1628841467 -0400
committer Rob Mueller <robm@fastmail.fm> 1628841467 -0400

Mail: Auth-SSL-Protocol and Auth-SSL-Cipher headers (ticket #2134).

This adds new Auth-SSL-Protocol and Auth-SSL-Cipher headers to
the mail proxy auth protocol when SSL is enabled.

This can be useful for detecting users using older clients that
negotiate old ciphers when you want to upgrade to newer
TLS versions of remove suppport for old and insecure ciphers.
You can use your auth backend to notify these users before the
upgrade that they either need to upgrade their client software
or contact your support team to work out an upgrade path.