It was desired that the tls1 and 1.1 e-mail services remain activated, which is why it is on the server
server_pref -u -ssl-protocols 'TLSv1 TLSv1.1 TLSv1.2'
set.
for nginx we had edited this extra so that TLSv1 TLSv1.1 are deactivated.
until the update to 18.0.38 that was always retained.
Ok...