Mail sending issue in Outlook

[utsav]

Hello There,

I have been trying to send an email of 4 MB using Outlook, It is continue to send email to recipient until it would disappear from Outbox. I am using outlook 2007.

Any suggestion?

[Kailash]

There could be many reasons for that but it is difficult to investigate without checking server logs.

[Akshay_M]

Few possibilities as below:

You have not installed the latest updates.
Outlook is in use by another process.
Outlook is loading external content, such as images in an email message.
A previously installed add-in is interfering with Outlook.
Your mailboxes are too large.
Your AppData folder is redirected to a network location.
You have to repair your Office programs.
Outlook data files have become corrupted or damaged.
Your installed antivirus software is outdated, or it conflicts with Outlook.
Your user profile has become corrupted.
Another program conflicts with Outlook.
Try updating OS along with outlook and antivirus. Check network connection. Run the Outlook Advanced Diagnostics tool if available.