sendmail
BSD Sendmail
The "Unix System Administration Handbook" calls sendmail "The most complex and complete mail delivery system in common use..." . Ready-made configuration files are included for systems connected by TCP/IP (with or without a name server) and for systems using UUCP. 'procmail' is used as a local mail agent. "sendmail" is a trademark of Sendmail, Inc.
There is no official package available for openSUSE Leap 15.6Distributions
openSUSE Tumbleweed
openSUSE Leap 15.6
openSUSE Leap 15.5
openSUSE Backports for SLE 15 SP4
SUSE SLE-15-SP2
SUSE SLE-12-SP5
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.