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2023 Feb 17
1
dovecot_login accepts blank password for exim smtp auth
...s an
open relay.
This is clearly a config issue on my part (since fixed), but should
dovecot_login guard against blank passwords or system users just as a
normal login does?
I'm running dovecot 2.2.36 (1f10bfa63)
Exim version 4.96
I don't know which software supplies the dovecot_login connenector.
The SMTP session would include
AUTH LOGIN
334 VXNlcm5hbWU6
cG9zdGZpeA==
334 UGFzc3dvcmQ6
???????????? <--? nothing, just a return here
235 Authentication succeeded
DONE