Sophos UTM Home Edition 9.113-1
UTM local IP address 192.168.0.1
email server local IP address 192.168.0.129
1. The Quarantine Report fails to be sent. Instead, I get the following email from
[SIZE=2]Mail Delivery System [SIZE=2][SIZE=2]Mailer-Daemon@gateway.mysite.com[/SIZE][/SIZE][SIZE=2]>[/SIZE]:
...
[FONT=Courier New][SIZE=2]This message was created automatically by the SMTP relay on gateway.mysite.com[/SIZE][/FONT][FONT=Courier New].
A message that you sent could not be delivered to all of its recipients.
The following address(es) failed:
jeff@mysite.net[/FONT]
[FONT=Courier New] SMTP error from remote mail server after RCPT TO:[FONT=Courier New]jeff@mysite.net[/FONT][FONT=Courier New]>:
host 192.168.0.129 [192.168.0.129]: 530 SMTP authentication is required.
------ This is a copy of the message, including all the headers. ------
Return-path: gateway@mysite.com[/FONT][FONT=Courier New]>
Received: from MailerDaemon (helo[/FONT][FONT=Courier New]=spam.report)
by gateway.mysite.com with local-bsmtp (Exim[/FONT][FONT=Courier New] 4.76)
(envelope-from gateway@mysite.com[/FONT][FONT=Courier New]>)
id 1Y2R84-00063r-11
for jeff@mysite.net[/FONT][FONT=Courier New]; Sat, 20 Dec 2014 16:00:00 -0500
From: gateway@mysite.com[/FONT]
[FONT=Courier New] To: [/FONT][FONT=Courier New]jeff@mysite.net[/FONT]
[FONT=Courier New] Subject: Quarantine Report for [/FONT][FONT=Courier New]jeff@mysite.net[/FONT]
[FONT=Courier New] Date: Sat, 20 Dec 2014 16:00:00 -0500
MIME-Version: 1.0
Content-Type: [/FONT][FONT=Courier New]multipart/related; boundary="1419109200.5Ad0880.23301"; charset="utf[/FONT][FONT=Courier New][SIZE=2]-8"
Message-Id: E1Y2R84-00063r-11@gateway.mysite.com>[/SIZE][/FONT]
[FONT=Courier New]
[/FONT]
[FONT=Courier New]***lots of base64 email content***[/FONT]
[SIZE=2]...[/SIZE]
My email server requires authentication to send mail from every IP address except 127.0.0.1. but has never prompted for authentication to receive email until I started using the proxy. Why does authentication need to take place for Sophos to send the Quarantine Report? I already have authentication credentials set under Management->Notifications->Advanced.
2. What is transparent mode? When enabled, I do not receive any emails. I thought this setting would allow the proxy to forward received emails to the internal email server with the original headers/DNS/IP address of the sender instead of using 192.168.0.1 and domain name of UTM.
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