Need help with RFC Error "Security mechanism not supported"

Giganews Newsgroups
Subject: Need help with RFC Error "Security mechanism not supported"
Posted by:  Jon Robertson (
Date: Thu, 23 Mar 2006

I'm starting my first project using FTP Client and SSL.  I've been
reading/researching/learning for the past two days and now I've finally
started the project.

I'm using the dev snapshot of Indy 10 from March 22nd, 2006.

I seem to be able to Connect, as calling Connect returns "Connected" to
the IdFTP.OnStatus event.

But when I call List, I get the following:

EIdReplyRFCError 'Security mechanism not supported.'

I understand that this is not an Indy error, but rather an official
error from the RFC specification.  But from which RFC specification?
I've searched the RFCs (specifically 959 and 2228) and I can't find
this error.

Any advice would be appreciated.  Thanks.

Jon Robertson
Borland Certified Advanced Delphi 7 Developer
MedEvolve, Inc