Sending PO thru Email to vendor

Hi,

I have maintained the email id in vendor master, created new output type and linked for medium 5 with all other related settings.

After creation of PO, i am not getting PO in the mail. I have checked the status thru T.code SOST i found error message 802. Also error observed in t.code SCOT.

Please advice me any other settings required? and how to acheive the requirement?

Regards,

Sattuj