I'm probably missing something obvious, but I can get sendmail to give me AUTH PLAIN and LOGIN options.
What I have is fairly standard configuration. The relevant part of sendmail.mc looks something like this:
define(`confCACERT_PATH',`/etc/ssl/certs') define(`confCACERT',`/etc/ssl/ca-bundle.crt') define(`confSERVER_CERT',`/etc/ssl/smtp.crt') define(`confSERVER_KEY',`/etc/ssl/smtp.key') define(`confAUTH_OPTIONS', `A p') TRUST_AUTH_MECH(`EXTERNAL LOGIN PLAIN') define(`confAUTH_MECHANISMS', `EXTERNAL LOGIN PLAIN') DAEMON_OPTIONS(`Port=25, Name=MTA') DAEMON_OPTIONS(`Port=465, Name=TLSMTA, M=s')
So basically, LOGIN and PLAIN should be offered when SSL/TLS is in use (but not for plaintext sessions). However, when connecting over TLS, sendmail doesn't advertise them:
$ openssl s_client -connect localhost:465 [ SSL/TLS handshake output deleted, AES256 cipher was used ] 220 testbox.miliv.org ESMTP Unauthorized access prohibited EHLO localhost 250-testbox.miliv.org Hello localhost [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DELIVERBY 250 HELP
Attempt to "brute-force" use them results in error (as expected):
AUTH PLAIN 504 5.3.3 AUTH mechanism PLAIN not available
I'm sure I'm missing something obvious here, probably a flag or two either in confAUTH_OPTIONS or in DAEMON_OPTIONS, but couldn't dig out which.
Alraedy drank all coffe, and becoming desparate ;-)
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