We had to change our hostname in SMPT header, so we used sk101870. After installing policy when we are looking at postfix queue with command "[Expert@HostName:0]# /opt/postfix/usr/sbin/postqueue -c /opt/postfix/etc/postfix/ -p", we have a warning: "Jul 3 17:59:53 2018 TEST-HOST postfix/smtpd: warning: /opt/postfix/CTX/CTX00003/etc/postfix/main.cf, line 55: overriding earlier entry: myhostname=TEST-HOST". We can see multiple records "myhostname=..." in file /opt/postfix/CTX/CTX00003/etc/postfix/main.cf. If we would remove and leave only one, the problem is gone. But these records are recreated every time we install policy. Is there any way to remove them permanently or make that warning not appear?