Hi Jonathan, Fine, thanks for that explanation. The 501 error is apparently caused by the fact that when an email is generated by KeySoft, it doesn't strictly enclose the header in angle brackets, an international standard which is enforced by some providers. I can, for example, receive mail fine, but am unable to send. Fortunately, my provider offers webmail to its customers, so I can use Keyweb if I need email on the PK. I know that Dean has explained this one on the list very soon after I got my PK back in November.
Cheers. Paul.
