> fatal: open database /opt/zimbra/postfix/conf/protected_recipients.db: Invalid argument
The error clearly says .db file is not proper. You need to check the file /opt/zimbra/postfix/conf/protected_recipients for some wrong entries ( maybe in terms of enter or space or some special character not supported in email address) just remove entries you added later and figure out what entry was wrong.
Remember after any change you make to /opt/zimbra/postfix/conf/protected_recipients you need to run postmap so that it updates the db file. |