Comment 5 for bug 1940603

I don't see a 220 message with the nc command either.

State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 1 127.0.0.1:24697 0.0.0.0:* users:(("IDrive:CDP-serv",pid=15790,fd=4))
LISTEN 0 100 0.0.0.0:25 0.0.0.0:* users:(("master",pid=2515,fd=13))
LISTEN 0 4096 0.0.0.0:4000 0.0.0.0:* users:(("rpc.statd",pid=3079,fd=9))
LISTEN 0 100 0.0.0.0:993 0.0.0.0:* users:(("dovecot",pid=1471,fd=35))
LISTEN 0 100 0.0.0.0:143 0.0.0.0:* users:(("dovecot",pid=1471,fd=33))
LISTEN 0 4096 0.0.0.0:111 0.0.0.0:* users:(("rpcbind",pid=1103,fd=4),("systemd",pid=1,fd=237))
LISTEN 0 4096 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=1137,fd=13))
LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=1490,fd=3))
LISTEN 0 5 127.0.0.1:631 0.0.0.0:* users:(("cupsd",pid=8958,fd=7))
LISTEN 0 100 [::]:25 [::]:* users:(("master",pid=2515,fd=14))
LISTEN 0 4096 [::]:4000 [::]:* users:(("rpc.statd",pid=3079,fd=11))
LISTEN 0 100 [::]:993 [::]:* users:(("dovecot",pid=1471,fd=36))
LISTEN 0 100 [::]:143 [::]:* users:(("dovecot",pid=1471,fd=34))
LISTEN 0 4096 [::]:111 [::]:* users:(("rpcbind",pid=1103,fd=6),("systemd",pid=1,fd=239))
LISTEN 0 128 [::]:22 [::]:* users:(("sshd",pid=1490,fd=4))
LISTEN 0 5 [::1]:631 [::]:* users:(("cupsd",pid=8958,fd=6))