sendmail-bin - 8.15.2-14~deb10u1 main

Sendmail is an alternative Mail Transport Agent (MTA) for Debian.
It is suitable for handling sophisticated mail configurations,
although this means that its configuration can also be complex.
.
Fortunately, simple things can be done easily, and complex things
are possible, even if not easily understood ;) Sendmail is the *ONLY*
MTA with a Turing complete language to control *ALL* aspects of delivery!
.
Sendmail provides Security and SPAM/UCE/UBE protection via several means.
.
Sendmail includes *no* Mail User Agents (MUA), you'll have to
pick from the plethora of available MUAs (mutt, vm, etc.)
.
This package supports REGEX, DB, NIS, NIS+, LDAP, DNS maps,
and has enabled TCPWrappers, IPv6, LockFile, SMTP AUTH(SASL), STARTTLS(SSL).