Re: Degree of adoption for Enhanced Reply Codes?

Dave Crocker wrote:

> Howdy.
>
> I'm interested in getting a basic sense of how useful email operators 
> are finding the Enhanced SMTP reply codes.
Operators or SMTP server developers?

> This isn't for anything formal, but the question came up in discussion 
> and I realized that I had no idea how widespread adoption or use was.
Isode SMTP server supports them. I personally find them more useful than 
the regular SMTP error codes, as they are more detailed.