Environment - windows 2008 sp2 running exchange 2007 sp3. Users try to attach a file larger than 10 megs - get message "the attachment size exceeds the allowable limit". Send/receiver connectors set at 30 megs. Transport set to unlimited. Users don't have restrictions. Am I looking for the wrong item? These are attachments - is this a setting I need to set elsewhere? Can't seem to find an answer. Any help would be appreciated.

What client are they using? What is the exact sequence of steps they follow and the exact error message they receive?Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Outlook 2007 SP2. Start new email, click on the attach file icon in the above menu bar. message - the attachment size exceeds the allowable limit. Anything under 10 megs works - figure this is the default. Would like to increase if I could find out where.

What do you see when you run: Get-TransportConfigEd Crowley MVP "There are seldom good technological solutions to behavioral problems."

http://technet.microsoft.com/en-us/library/bb124345(EXCHG.80).aspx Managing Message Size Limits

ClearCategories : True ConvertDisclaimerWrapperToEml : False DSNConversionMode : UseExchangeDSNs GenerateCopyOfDSNFor : {5.4.8, 5.4.6, 5.4.4, 5.2.4, 5.2.0, 5.1.4} InternalSMTPServers : {} JournalingReportNdrTo : <> LegacyJournalingMigrationEnabled : False MaxDumpsterSizePerStorageGroup : 18MB MaxDumpsterTime : 7.00:00:00 MaxReceiveSize : unlimited MaxRecipientEnvelopeLimit : 5000 MaxSendSize : unlimited TLSReceiveDomainSecureList : {} TLSSendDomainSecureList : {} VerifySecureSubmitEnabled : False VoicemailJournalingEnabled : True HeaderPromotionModeSetting : NoCreate WritingBrandingInDSNEnabled : True

Have read this article - not much help in finding my problem.

Have read this article - not much help in finding my problem. It explains where all the possible settings are for message size. 10MB is the default. You can change the org level, the connector level, the user level etc... Maybe this one is clearer: http://www.msexchange.org/articles-tutorials/exchange-server-2007/management-administration/exchange-2007-message-size-limits.html

1. Did you recetly make them changes to the transport server (message limits), or have they been around for some time, if recently, then wait for a while, Exchange has a cache, for certain things. 2. Check the following keys on a problem user and see if there is MaximumAttachmentSize? If exists what the size is set to. If exists, try setting to 0 and test. HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Preferences HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\Preferences Sukh

The org level is unlimited as seen above. My connectors are at 30megs and the users, groups, contacts - etc are unlimited. Much better article by the way - thankyou.

These settings have been around for some time - just recently someone wanted to send a large attachment and could not. Test other users including myself and can't send large attachments. There is no MaximumAttachmentSize found in the registry. Thanks

These settings have been around for some time - just recently someone wanted to send a large attachment and could not. Test other users including myself and can't send large attachments. There is no MaximumAttachmentSize found in the registry. Thanks Correct. That registry entry is only used for IMAP/POP mode. Outlook clients in Exchange Mapi mode use the Exchange settings. By the way, what happens if you try to send the same attachment with OWA?

I get this message. The files C5150n.pdf were not attached because they exceed the maximum size limit of 5 megabytes (MB) for attachments.

Thats interesting, because the default in OWA in 30 MB: http://blogs.technet.com/b/exchange/archive/2006/11/14/3397259.aspx any difference in Outlook between online and cache mode?

Unchecked - use cached exchange mode - can attach 25 meg attachment. Checked - use cached exchange mode - can NOT attach 25 meg attachement. What's up with that? How do I resolve this issue? Thanks

try deleting the OST and creating again. Sukh

Unchecked - use cached exchange mode - can attach 25 meg attachment. Checked - use cached exchange mode - can NOT attach 25 meg attachement. What's up with that? How do I resolve this issue? Thanks Try this. Enable Cache Mode, Close Outlook, , delete the associated cache file *.ost and re-open Outlook to recreate the cache. Or create a new Outlook cached profile and give it a new Profile name and test.

That worked!!! So this is the fix, but going to stink doing it for 180 some users - give or take. Guess I'll only fix those who complain. Thanks for everyones help.