I cannot find anywhere on my network any viruses or open relays please help as these msg's are beginning to flood in.
Diagnostic information for administrators:
Generating server: our.server.com firstname.lastname@example.org
mail.123greetings.com #550 5.1.1 <email@example.com>... User unknown ## Original message headers:
Received: fromour.server.com ([xxx.xxx.xxx.xxx]) by our.server.com ([xxx.xxx.xxx]) with mapi; Mon, 26 Apr 2010 14:51:55 -0400
To: "firstname.lastname@example.org" <email@example.com>
Date: Mon, 26 Apr 2010 14:51:53 -0400
Subject: [Ticket #8] New Comment: Undeliverable: Malicious object detected
Thread-Topic: [Ticket #8] New Comment: Undeliverable: Malicious object detected
Content-Type: text/plain; charset="us-ascii"
firstname.lastname@example.org said: Delivery has failed to these recipients or distribution lists:
The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: mail.123greetings.com.
Sent by Microsoft Exchange Server 2007
So i ran a test to see if we were an open relay i got these results
220 xxx.xxx.xxx Microsoft ESMTP MAIL Service ready at Mon, 26 Apr 2010 15:20:39 -0400
Not an open relay.
0 seconds - Good on Connection time
5.226 seconds - Warning on Transaction time
OK - xxx.xxx.xxx.xxx resolves to alicart.com
OK - Reverse DNS matches SMTP Banner
250 xxx.xxx.xxx Hello [xxx.xxx.xxx.xxx] [62 ms]
MAIL FROM: <email@example.com>
250 2.1.0 Sender OK [47 ms]
RCPT TO: <firstname.lastname@example.org>
550 5.7.1 Unable to relay [5070 ms]
221 2.0.0 Service closing transmission channel [47 ms]