If headers don't end with linefeed and there's no ':' in the line, don't hide the data.
If headers don't end with linefeed and there's no ':' in the line,
don't hide the data.

Distrotech/dovecot,damoxc/dovecot,LTD-Beget/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot