time taken for reception from QT log elements.
15. Main option "smtp_backlog_monitor", to set a level above which listen
time taken for reception from QT log elements.
15. Main option "smtp_backlog_monitor", to set a level above which listen
18. TLS ALPN handling. By default, refuse TLS connections that try to specify
a non-smtp (eg. http) use. Options for customising.
18. TLS ALPN handling. By default, refuse TLS connections that try to specify
a non-smtp (eg. http) use. Options for customising.