Send a copy to an email forward fails with a bounce. Dovecot does not see a mailbox
If you send a copy to an email forward it will bounce To recreate this 1)Create an email forward like foo@me.com 2)Create a new mailbox like abc@me.com and in the "Send a copy to" box write in foo@me.com 3)Send an email to abc@me.com and it will bounce with a log message like this to=foo@me.com, relay=dovecot, delay=0.87, delays=0.5/0/0/0.37, dsn=5.1.1, status=bounced (user unknown) I am using postfix and dovecot