Can't Send Attachments Using Exchange Account

Hi MPower!

Can you please provide me the fix for the size problem?

I have got one exchange 2003 server with 2 mailboxes. one mailbox/account can send mails with attachments >50 kb - the other not.

Thanks!

ChrKrikl, that was the correct solution. Thank you very much. 🙂 🙂 🙂

This is what worked for us:

Environment:
ActiveSync configured on Exchange 2003 SP2 running on Windows Server 2003 SP2with IIS 6

Issue:

• Email message with attachment (regardless of attachmentsize) sent from a mobile device(smartphone, iPhone, iPad, etc.) remains “stuck” in mobile device’s Outbox, but NOT in Exchange account Outbox
• No error message(s) displayed on mobile deviceor on Exchange server
• NOTE:NO problems receiving/opening/reading Incoming emails that have attachments on a mobile device

Fix:

Go to the %SystemRoot%\Temp( WINNT\Temp or WINDOWS\Temp)directory on the Exchange server:

• Click on the Security tab and add Authenticated Users
• Grant AuthenticatedUsers the following permissions:
• Modify
• Read & Execute
• List Folder Contents
• Read
• Write

Hi!

I had the same Problem with the TEMP directory. After hours i found it our. Only Admins and System were allowed to write to the folder. Changing it to Authenticated Users solved my issu.

Martin

@Jeffred OH MY GOD THANKYOU!!!

That problem has existed for so long on a customers server and I've never been able to figure why!!

Every 6 months I'd have another look at it and try so many different things, I can't believe it was something so simple!!

This is the first time I've every actually signed up and logged in to say thanks, so means a LOT thank you!!

Phil

Does this work for Exchange 2010?

ChrKrikl solution worked for me on Exchange 2010.

Just had to fix this issue. Thanks Jeffred for providing the solution. Works for 2003

SOLUTION for setup = Any iPhone using Exchange email account (all versions)

this works in a business environment, tested on Exchange 2007, 2010, 2013, change is instant and does not require a server reboot.

#Exchange Client Access Server Administrators {set all your send & receive connectors to the the same value, then double that value and use it in the steps below}

There are client-specific message size limits you can configure for Outlook Web App and email clients that use ActiveSync or Exchange Web Services (EWS)

ACTIVESYNC FILES

%ExchangeInstallPath%FrontEnd\HttpProxy\Sync\web.config

%ExchangeInstallPath%ClientAccess\Sync\web.config

%ExchangeInstallPath%ClientAccess\Sync\web.config

you will need to update the entries for maxRequestLength & maxReceivedMessageSize to a value depending on your Send/Receive Connector size limits.

example to allow 50MB attachments to be sent from iPhones via ActiveSync

maxRequestLength="100000"

maxReceivedMessageSize="100000"

The reason why i have set the value to 100MB is to allow for a 33% increase in size due to Base64 encoding, multiply your desired new maximum size value in megabytes by 4/3. To convert the value into kilobytes, multiply by 1024. To convert the value into bytes, multiply by 1048756 (1024*1024). Note that the size increase caused by Base64 encoding could be greater than 33%, and depends on several factors, for example, the attachment file size, type, compression, and the email client used to compose and send the message.

Sometimes you will see a 9MB attchment appear as 11MB or 12MB on the iPhone (this is why)

I hope this fix is helpful to all Server Administrators out there 🙂

In my case a large video blocked the outgoing mail folder (Mail, Exchange, Out). Go in flight mode and then delete the mail.

Can you please let me know the fix? Cheers.

Can you please let me know the fix? Cheers

These setting changes on exchange helped me to fix the issue, thank you.