Mail Triggering

Question

hi friends...

i had a problem with sending mail using trigger when Update data from a table. Procedure is executed successfully. but when i update record from a particular table. I had a following error


xp_sendmail: Either there is no default mail client or the current mail

client cannot fulfill the messaging request. Please run Microsoft Outlook

and set it as the default mail client.

(0 row(s) affected)

Can any one explain what's my problem and give me a solution for this.

it's Urgent !!!!!!!