error to send mail using xp_smtp_sendmail

[PraveenKatiyar]

Hi,
when i send mail using xp_smtp_sendmail it gives error---
Server response: 554 <[e-mail]>: Sender address rejected: Access denied

I m using--
declare @rc int
exec @rc = master.dbo.xp_smtp_sendmail
@FROM = '[e-mail]',
-- @FROM_NAME = 'pkkatiyar',


@TO = '[e-mail]',
@CC = '',
@BCC = '',
-- @priority = 'NORMAL',
@subject = 'Hello',

-- @type = 'text/plain',
@message = 'Goodbye MAPI, goodbye Outlook',

-- @messagefile= '',
-- @attachment = '',

-- @attachments= '',
-- @codepage = 0,

-- @timeout = 10000,
@server = 'smtp.cc.iitk.ac.in'

select RC = @rc

go


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