Coldfusion not sending email - email

Question

I am having problems with this website, it isn't sending any emails. Basically when someone places a order, it sends a comfirmation email. I don't see any problems with the code but I believe this is the right place to be looking for the problem. Can some one help me please?
<cfquery name="getUser" datasource="personal2009">
SELECT * FROM site_users WHERE id = '#session.id#'
</cfquery>
<cfoutput>
<cfmail to="#site_email#" from="#site_email#" subject="Website International Order Request">
#getUser.title# #getUser.Firstname# #getUser.Surname# has requested to deliver an order to an international address.
Their contact details are:
#getUser.Address1#
#getUser.Address2#
#getUser.Town#
#getUser.Postcode#
#getUser.Country#
#getUser.Tel#
#getUser.email#
The delivery address requested is:
#formtitle# #formFirstname# #formSurname#
#formAddress1#
#formAddress2#
#formTown#
#formPostcode#
The order details are:
<cfset thisrow = 0><cfoutput><cfset thisrow = thisrow + 1><cfset tot = 0><cfloop index="list" from="1" to="#session.numincart#"><CFQUERY NAME="ind" DATASOURCE="personal2009" maxrows=1>SELECT * FROM products WHERE id = #listgetat(session.cart, list)#</CFQUERY>
Product Name: #ind.product_name#
Price: £#decimalformat(listgetat(session.price, list))#<cfset multiply2 = #listgetat(session.quant, list)#>
Quantity: #listgetat(session.quant, list)#
</cfloop></cfoutput>
Thank you
</cfmail>
</cfoutput>
<cfset session.endemail = '1'>

Answer 1

Depending on what your hosting environment looks like, I may suggest altering your cfmail tag to the following:
<cfmail to="#site_email#" from="#site_email#" subject="Website International Order Request" server="#server#" username="#username#" password="#password#">
1) If you don't have access to the CFADMIN, you are unable to track your mail path. Specifying your own server/username/password will allow you to send email with your own SMTP server and rule that out.
2) Even if your host has CFMAIL setup with a SMTP default server, it may be possible that they have not setup SMTP relaying correctly. The outcome is your mail gets sent through coldfusion but rejected by the smtp server.
3) Even if your host has CFMAIL setup and SMTP relaying setup, the last possibility could be SPAM filters on the receiving end. If you have SPAM filters that look at SPF/Domain Keys/other criteria, they could be blocking to emails too.
Specifying your own server/username/password is usually the best bet to troubleshooting email issues.