Iphone 3GS Email issue

I just purchased an Iphone 3GS (previous owner of 3G)

Had email setup through Push with my works Exchange server with out any problems.

Now, every so often I try to send an email with an attachment(or forward it)it gets stuck in my out box and won't send.

I have full signal!

Error: "Cannot Send Mail" An Error occurred while delivering your this message.


Ever since I have upgraded to 3GS I have been having issues sending email.

There are a few other people in the office experiencing the same problem with their 3gs, and all of the people with 3g are still not having any problems.



None of the settings at my job have changed at all.

Any help would be nice.