Ok:
grep postfix /var/log/zimbra.log
Code:
Jun 9 11:42:10 malone postfix/postfix-script[27036]: starting the Postfix mail system
Jun 9 11:42:10 malone postfix/master[27037]: daemon started -- version 2.4.7, configuration /opt/zimbra/postfix-2.4.7.5z/conf
Jun 9 12:09:26 malone postfix/postfix-script[15973]: stopping the Postfix mail system
Jun 9 12:09:26 malone postfix/master[27037]: terminating on signal 15
Jun 9 12:10:01 malone postfix/postqueue[16277]: fatal: Queue report unavailable - mail system is down
Jun 9 12:11:05 malone postfix/postfix-script[19614]: starting the Postfix mail system
Jun 9 12:11:05 malone postfix/master[19615]: daemon started -- version 2.4.7, configuration /opt/zimbra/postfix-2.4.7.5z/conf
Jun 9 12:24:54 malone postfix/smtpd[29203]: connect from ***[***.***.***.***]
Jun 9 12:24:54 malone postfix/smtpd[29203]: 6752C5201E5: client=***[***.***.***.***]
Jun 9 12:24:54 malone postfix/cleanup[29207]: 6752C5201E5: message-id=<1593622845.01244543093837.JavaMail.root@malone>
Jun 9 12:24:54 malone postfix/smtpd[29203]: disconnect from ***[***.***.***.***]
Jun 9 12:24:54 malone postfix/qmgr[19620]: 6752C5201E5: from=<admin@***>, size=649, nrcpt=1 (queue active)
Jun 9 12:24:54 malone postfix/pipe[29208]: 6752C5201E5: to=<***>, relay=dfilt, delay=0.28, delays=0.21/0.01/0/0.06, dsn=5.3.0, status=bounced (Command died with status 2: "/opt/zimbra/postfix/conf/disclaimer". Command output: /opt/zimbra/postfix/conf/disclaimer: 25: Syntax error: "||" unexpected )
Jun 9 12:24:54 malone postfix/cleanup[29207]: A94B75201E9: message-id=<20090609102454.A94B75201E9@malone.sedasolubles.com>
Jun 9 12:24:54 malone postfix/bounce[29218]: 6752C5201E5: sender non-delivery notification: A94B75201E9
Jun 9 12:24:54 malone postfix/qmgr[19620]: A94B75201E9: from=<>, size=2677, nrcpt=1 (queue active)
Jun 9 12:24:54 malone postfix/qmgr[19620]: 6752C5201E5: removed
Jun 9 12:24:55 malone postfix/lmtp[29219]: A94B75201E9: to=<admin@***>, relay=***[***.***.***.***]:7025, delay=0.46, delays=0.06/0.01/0.01/0.38, dsn=2.1.5, status=sent (250 2.1.5 OK)
Jun 9 12:24:55 malone postfix/qmgr[19620]: A94B75201E9: removed