Domino Web Access Error while sending

Hi…

Problem :Few of My users facing problem regarding domino Web Access.When users try to send message he is getting folllowing error

Error: Domino Web Access Warning.Sorry , We are unable to process your request at this time.If you are unable to continue working in your mailfile, please dismiss the warning and then select view, refresh from browser menu.

Things Done yet: I have checked same from desktop its working fine at my end. I have sent mail from desktop from users account its working fine , not giving any error.

I request all notes.net team , if anybody from you knows the solution for this then please reply.

Thanks in Advance

Ganesh Patil