Auto BCC for Sender mail
[root@mail ~]# su zimbra
[zimbra@mail root]$ cd /opt/zimbra/conf
[zimbra@mail root]$ vim recipient_bcc
mailer@bluerack.com.bd copy_receiver@bluerack.com.bd
[zimbra@mail root]$ cd /opt/zimbra/common/conf
[zimbra@mail root]$ vim main.cf
add the following line in bottom page
sender_bcc_maps = lmdb:/opt/zimbra/conf/recipient_bcc
[zimbra@mail root]$ postmap /opt/zimbra/conf/recipient_bcc
now restart the postfix
[zimbra@mail root]$ postfix reload
Now a copy emails will send automatically to the email address that you specify without added in Bcc recipient each time.