/etc/ufw/applications.d/
/etc/ufw/applications.d
NameSizeModeActions
apache2/-0755rm
apache2-utils.ufw.profile4060644editdlrm
nginx3740644editdlrm
openssh-server1450644editdlrm
postfix3610644editdlrm
Edit: /etc/ufw/applications.d/postfix (361B)
[Postfix] title=Mail server (SMTP) description=Postfix is a high-performance mail transport agent ports=25/tcp [Postfix SMTPS] title=Mail server (SMTPS) description=Postfix is a high-performance mail transport agent ports=465/tcp [Postfix Submission] title=Mail server (Submission) description=Postfix is a high-performance mail transport agent ports=587/tcp