Exchange 2010 - Outlook 2010 - Attachments Stripped on Forward

Not open for further replies.


We have a new core of Exchange 2010 SP1 with Outlook 2010 clients. We noticed that intermittently, attachments are getting stripped when forwarded to internal users. The forwarding user's Sent Items folder has an email with the attachment. The receiving user has the email, but no attachment. OWA also shows the email, but no attachment.

This behavior is very inconsistent, but happens once in a wile. The Attachment Filtering Agent does not appear to be enabled. GFI MailSecurity and MailEssentials software is installed. Neither is configured to filter any attachments.

I noticed a few newsgroup posts about this issue, but no solutions. Hopefully someone can help.

Tom Vanopoulos

Do you have any Outlook Rules related to attachments?

If you have antivirus installed on Exchange or client machines, temporarily try disabling it and see if the attachments no longer get stripped.

Take a look at the following article related to attachment Filtering on the Exchange Server.

Also, can you try Outlook Web App and see if the attachment appears in OWA?
MCITP: Enterprise Messaging Administrator 2007/2010 | MCITP: Server Administrator | MCTS: Windows Server 2008 Applications Infrastructure, Configuring | MCP | MCDST



Thanks for the reply. I have looked at the Technet article. The attachment filtering agent is disabled outright on this server.

Since this problem is very intermittent (perhaps 1 out of 50 forwarded messages will drop attachments), it is very impractical for me to disable A/V. I might as well shut down my network because someone will certainly pick up a virus.

The attachment is not on OWA. It appears to be stripped before it gets to Outlook or OWA. ActiveSync also strips the attachment.

Is there any logging I can turn on? The typically message tracking logs show that the message was processed successfully. The A/V logs also state the same thing.



Hi Ketchup,
It sounds odd!
Do you use outlook 2010 on windows PC, or outlook on MAC pc?
I have run into a issue like yours on MAC PC, it seems an issue.
I would check the outlook client log, and the pipeline log on the exchange server to confirm the issue.
Yet, it would nees more log to analyze the issue, I would suggest that you could open a ticket from MS, if it is urgent.
Best regards!

leslie hill

OK, we founf the issue.....Forefront was stripping the files off because it didn't like the way in which they had been zipped up. Turns out that when you zip a file information is put in the header of the zip to confirm how the file as been zipped up. The util we where using did not supply all the zip information in the header and Forefront thought it was not a propper zip file and thus treated it as suspect. Once we had contacted the supplier they provided us with a new copy which worked fine.

Not open for further replies.
Similar threads
Thread starter Title Forum Replies Date
B Exchange 2010 / Outlook 20070 "client error in synchronization log" Exchange Server Administration 1
P Outlook 2010 MS Exchange Calendar to Android- ical or webdav? Using Outlook 1
Fozzie Bear Outlook 2010 or 2013 Dual Configuration Exchange + IMAP Exchange Server Administration 6
Digitally Hip Outlook 2010 (32) and Exchange 2010 (sp3) sender info not displaying in Outlook Using Outlook 1
N Outlook 2010 exchange - auto-move emails from @domain Exchange Server Administration 1
V Outlook 2013 cant stay connected to exchange 2010 Exchange Server Administration 5
L Weird Inbox problems Outlook 2010/13 and Exchange Exchange Server Administration 2
R Exchange 2013/Outlook 2010 Slow Startups Exchange Server Administration 8
Z Outlook 2010 client to Exchange ,,,,search not working proparly Exchange Server Administration 0
M First post -help with managing two calendars Outlook 2010 /Exchange 2010 Using Outlook 0
T Outlook INBOX emails gone back 2-3 weeks after Exchange Server 2010 Restart Using Outlook 0
A Exchange 2003 Outlook 2010 64 Bit- AutoDiscover Connection Err - Certificate Exchange Server Administration 9
C Outlook 2010, two exchange mailboxes configured.Unable to see 2ndrymeeting req Using Outlook 2
A File - Save Attachments does nothing in Outlook 2003 with Exchange 2010 ... Using Outlook 3
B Sharing Multiple Outlook 2010 Calendars (Exchange) Exchange Server Administration 4
B Using hosted exchange to sync outlook 2010 calendars and contacts to BB Z10 Using Outlook 4
S Outlook 2010/Exchange 2010 Multi Mailboxes (Server unavailable) Using Outlook 6
O outlook 2010, owa, exchange Exchange Server Administration 2
D why do exchange contacts not sync properly from outlook 2011 to outlook 2010 Exchange Server Administration 2
C Exchange 2010 - Outlook 2010 - Exchange Server Administration 4
Fozzie Bear Outlook 2010 wont remember Exchange Credentials on log off /shutdown of Win7 Exchange Server Administration 2
I Shared Contacts in Outlook 2010 and Exchange Server 2010 Using Outlook 4
A emails disappearing from inbox outlook 2010 exchange server 2010 major trouble Exchange Server Administration 6
B Outlook 2010 won't configure exchange account, 0kb .ost file Exchange Server Administration 5
R Thousand of sync issues on Outlook clients with Exchange 2010 Exchange Server Administration 5
T Exchange / Outlook 2010 - How to cancel meetings but retain the calendar entry Using Outlook 4
S Outlook Quick Steps - Exchange 2003 / Exchange 2010 Exchange Server Administration 2
A Exchange 2010 Outlook 2010 and Local Failures sync issue Exchange Server Administration 5
B Exchange 2010 / Outlook 2010 - Group Folder issues Exchange Server Administration 6
T Outlook 2010/Exchange 2003: Meeting Organizer doesn't show Using Outlook 1
C Outlook/Exchange 2010 Recover Deleted Items to original folder Using Outlook 2
R Change Outlook 2010 Exchange server address via registry or script Using Outlook 5
T Outlook 2010 Mutliple Exchange Accounts SET UP QUESTIONS Using Outlook 4
M How to Configure Multiple Exchange Accounts in Outlook 2010 Using Outlook 2
M Outlook 2010 stopped connecting with Exchange server Using Outlook 1
S New Outlook 2003 Clients with Existing Exchange 2010 error's Exchange Server Administration 6
N Exchange 2010 RPC Over HTTPS, outlook keep trying port 135 Exchange Server Administration 9
E Outlook 2010 stopped work with Exchange 2010 Exchange Server Administration 1
T How to Assign Retention Tags for Notes Items in Exchange/Outlook 2010? Exchange Server Administration 0
J Exchange 2010 + Disable ActiveSync/Outlook Anywhere/POP/IMAP/ By Default Exchange Server Administration 5
B Outlook 2007 New email notification works intermittently after adding Exchange 2010 Servers Exchange Server Administration 1
M Outlook 2010-Sync with Exchange server 2007 Using Outlook 2
S Exchange 2010 outlook 2010 outlook anywhere cached mode Exchange Server Administration 2
J Suggested times does not work with Outlook 2010 in combination with Exchange 2007 SP2? Using Outlook 2
N Exchange 2007 SP1 + Outlook 2007/2010 - Autodiscover for Outlook Anywhere and Out of Office not working Using Outlook 1
M Outlook 2010 Connectivity with Exchange 2007 Using Outlook 5
M Outlook 2010 auto setup of Exchange account Using Outlook 1
O No SSL-IMAP connection Outlook <-> Exchange 2010 after latest client updates? Using Outlook 3
A outlook 2010, windows 7, exchange server: "The action cannot be completed. The connection to Micro Using Outlook 1
M Outlook 2010 Connectivity with exchange server 2007 Using Outlook 1

Similar threads