Mail.cfc is just a wrapper for <cfmail>. By the time CF is running it, it's exactly the same code.
Mail.cfc is clear text, and can be found here: [coldfusion dir]/WEB-INF/cfusion/CustomTags/com/adobe/coldfusion/mail.cfc. Be warned... the code is awful and might cause your eyes to bleed.
It'd be great to hear the reasoning behind the suggestion that the [person] gave you.
lol, Thanks Adam!
This is what he is observing...
---This issue lays outside our system. Each mail sending mechanism results in a different SMTP message which gets routed differently. We have issues with the reverse DNS lookup, the MX records, and other stuff. If everything is correct and in place, it shouldn’t matter which mail mechanism we use in ColdFusion, but <cfmail> messages appear to be more successful in getting through.---
I'm going to try and confirm the nature of the DNS issues and other stuff, but still can't see these even routing differently based on what you are saying.
Is CFMail and Mail (CFScript) the same.... I've got to believe that under the covers these are running the same bits of code...?
The intention is that they are the same under the covers. However, cfmail has been there for many years and so has been tried and tested. Whereas the cfscript mail functionality has yet to go through a period of teething and maturity.