Since the Sophos UTM upgrade from 9.705-3 to 9.705-7 the bounce message of undeliverable emails no longer contains the information 'text from pipe transports that is to be returned to the sender.'
See www.exim.org/.../ch-customizing_bounce_and_warning_messages.html
------ This is a copy of the message, including all the headers.
------
The template seems to be ok.
Sophos has shipped the Exim v4.94.2 - 9.705 with this firmware update.
With the Exim version of Sophus UTM 9.705-3 the bounce message contains the missing information.
template in version 9.705-7:
cat /var/storage/chroot-smtp/etc/exim.conf.includes/errmsg
Subject: mail.mailgate1.de Mail delivery failed ${if eq{$sender_address}{$bounce_recipient}{: returning message to sender}}
****
This message was created automatically by the SMTP relay on mail.mailgate1.de.
A message ${if eq{$sender_address}{$bounce_recipient}{that you sent }{sent by
<$sender_address>
}}could not be delivered to all of its recipients.
The following address(es) failed:
****
The following text was generated during the delivery attempt(s):
****
------ This is a copy of the message, including all the headers. ------
****
------ The body of the message is $message_size characters long; only the first
------ $return_size_limit or so are included here.
****
Example of an bounced email with 9.705-7:
Betreff: mail.mailer.de Mail delivery failed : returning message to sender
This message was created automatically by the SMTP relay on mail.mailer.de.
A message that you sent could not be delivered to all of its recipients.
The following address(es) failed:
kornrath@company.de
host mx201.company.de [111.123.170.21]
SMTP error from remote mail server after RCPT TO:<kornrath@company.de>:
550 5.0.0 unknown user
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