Duplicate header field "Subject" in quota notification
There is bad header in quota notifications mails. In mail headers is double "Subject" line with same content. Here is amavis message:
X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "Subject"
and here is message from yahoo mail server:
host mta5.am0.yahoodns.net[63.250.192.46] said: 554 Message not allowed - Headers are not RFC compliant[291] (in reply to end of DATA command)
We use translated mail templates in conf-custom. There is no difference with original template except translated strings.