May 20 03:26:08 zimbra1 postfix/qmgr[3319]: 197FCE6A6E: to=<user1@domain>, relay=none, delay=0.03, delays=0.02/0.01/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: conversation with mail.domain[192.168.10.103] timed out while sending end of data -- message may be sent more than once)
May 20 04:00:17 zimbra1 postfix/qmgr[3319]: 7E971E6A82: to=<user2@domain>, orig_to=<user@domain2>, relay=none, delay=0.05, delays=0.04/0.01/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: conversation with mail.domain[192.168.10.103] timed out while sending end of data -- message may be sent more than once)
May 20 04:03:13 zimbra1 postfix/qmgr[3319]: 197FCE6A6E: to=<user3@domain>, relay=none, delay=2226, delays=2226/0.04/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: conversation with mail.domain[192.168.10.103] timed out while sending end of data -- message may be sent more than once)