Nice to meet you. My name is Morikawa. Regarding Postfix relay settings, with the following configuration All outgoing emails must be virus checked.
I'm pointing the relay destination to a higher level virus check on the SMTP server. With this, mail addressed to local domain will be sent from the SMTP server to the IMAP server. I think it will be relayed and saved. (local domain goes to the IMAP server) Even for emails addressed to local domain, after performing a virus check once Is there a way to return it to the SMTP server? INTERNET | +-------+ | VIRUS | | check | +-------+ | +------+ | SMTP | ------------+ +------+ | ↑ ↓ | +------+ | | IMAP | | +------+ | | +-----+-------+ +----+-----+ | | | | | | ↓ ↓ +---------+ +----------+ +----------+ | clint-1 | | clinet-2 | | clinet-3 | +---------+ +----------+ +----------+ In fact all clinets connect to the SMTP/IMAP server My best regard.