Problems with returned mail

[jillrae]

Have an on-going problem with email being rejected by the server we are sending it to. It is not always the same server, but they detect our messages as SPAM or infected. This only happens when we REPLY to a received email. If we were to start a brand new email, they are alway accespted. This puts a "kink" in our email trails as it is good to have the last 3 or 4 replies all on one email for reference for both parties.

Is there a limit to the number (if any) replies that can be made on one email? How is the format different in a New vs REPLY message? Could this be triggering the SPAM/infected problem?

Thanks

Jill

[ScalixSupport]

Can you post the non-delivery otherwise we can only speculate what the problem is.

Cheers

Dave

[jillrae]

Example 1:

----- Original Message -----
From: Mail Delivery Subsystem
Sent: Mon, 5/15/2006 4:46pm
To: Ken Ward
Subject: Returned mail: see transcript for details

from root@localhost

----- The following addresses had permanent fatal errors -----
<ANTHONY.Q.HIMELRIGHT@saic.com>
(reason: 502 5.0.0 Mail infected )
(expanded from: <ANTHONY.Q.HIMELRIGHT@saic.com>)
<SCOTT.C.SHEPPA@saic.com>
(reason: 502 5.0.0 Mail infected )
(expanded from: <SCOTT.C.SHEPPA@saic.com>)
<LORI.A.HEERING@saic.com>
(reason: 502 5.0.0 Mail infected )
(expanded from: <LORI.A.HEERING@saic.com>)
<VALAYA.A.GOSS@saic.com>
(reason: 502 5.0.0 Mail infected )
(expanded from: <VALAYA.A.GOSS@saic.com>)

----- Transcript of session follows -----
... while talking to [127.0.0.1]:
>>> DATA
<<< 502 5.0.0 Mail infected
554 5.5.0 Remote protocol error



Example 2:

----- Original Message -----
From: Mail Delivery Subsystem
Sent: Tue, 5/16/2006 7:49am
To: Ken Ward
Subject: Returned mail: see transcript for details

from root@localhost

----- The following addresses had permanent fatal errors -----
<nancy.barnett@hickam.af.mil>
(reason: 502 5.0.0 Mail infected )
(expanded from: <nancy.barnett@hickam.af.mil>)

----- Transcript of session follows -----
... while talking to [127.0.0.1]:
>>> DATA
<<< 502 5.0.0 Mail infected
554 5.5.0 Remote protocol error

[jillrae]

Here is the mail log entry for the Example 2 problem:

My user just created a brand new email using the same hickham.af.mil address and it went through OK. But when he tries a reply, the message is rejected.

----- The following addresses had permanent fatal errors -----
<nancy.barnett@hickham.af.mil>
(reason: 550 Host unknown)

----- Transcript of session follows -----
550 5.1.2 <nancy.barnett@hickham.af.mil>... Host unknown (Name server: hickham.af.mil: host not found)

--k3I11Inp004799.1145322078/linux.garrettcontainer.com
Content-Type: message/delivery-status

Original-Envelope-Id: 15084671.1145322077486.JavaMail.root@li ... tainer.com
Reporting-MTA: dns; linux.garrettcontainer.com
Received-From-MTA: dns; localhost
Arrival-Date: Mon, 17 Apr 2006 21:01:17 -0400

Final-Recipient: rfc822; nancy.barnett@hickham.af.mil
X-Actual-Recipient: RFC822; nancy.barnett@hickham.af.mil
Action: failed
Status: 5.1.2
Remote-MTA: DNS; hickham.af.mil
Diagnostic-Code: SMTP; 550 Host unknown
Last-Attempt-Date: Mon, 17 Apr 2006 21:01:18 -0400

[ScalixSupport]

Hi,

if I remember correctly, you are using a spam appliance and you have posted the same question previously. Why don't you take that part out of the equation and send directly without the spam appliance. As it looks, you don't have a problem with Scalix, but with a third party product.

The error message Diagnostic-Code: SMTP; 550 Host unknown means exactly that, the host is unknown. This is a DNS problem, not a Scalix problem. Can you try changing the DNS server you are using or have someone check that for you?

Thanks,

Sascha.

[jillrae]

Thanks. I'll remove my SPAM filter and see what happends then. Will post a reply in a few days. I'll double check the DNS resolution error.

Jill

[jillrae]

Update. Removed my SPAM filtering software, BitDefender, yesterday AM. All day no problems sending, receiving or replying multiple times to emails that the day before were "bounced". Have no idea what BitDefender does to the emails, but will take that issue up with them. Meanwhile I have downloaded Spam Assassan and will work on installingit. Although I was suprised the amount of SPAM getting through has not increased significantly with or without Bit Defender.

Thanks

Jill