Hi I have probably to trivial questions about message-ID Why sometimes, some user have empty message-id=<>
example: Nov 23 13:13:53 smtp1 postfix/submission/smtpd[29867]: 4CfmKF1CSDz5MwK: xxxx.domain.ltd[xxx.xxx.xxx.xxx], sasl_method=login, sasl_username=bi...@domain2.ltd Nov 23 13:13:53 smtp1 postfix/cleanup[46909]: 4CfmKF1CSDz5MwK: message-id=<> Nov 23 13:13:53 smtp1 postfix/qmgr[25287]: 4CfmKF1CSDz5MwK: from=<bi...@domain2.ltd>, size=94874, nrcpt=3 (queue active) ..... --
