You may receive a 550 Access is denied message to a MLSD command when accessing a FTP server published by Forefront TMG 2010

“A FileZilla FTP server was published with Forefront TMG 2010 with a non-web server publishing rule.

The FTP server was accessible with IE9 as FTP client but not with the Filezilla FTP client, which received a 550 Access is denied message; the logs on TMG do not show anything specific.
Below you can see the log from the Filezilla FTP client…”

For more information, check out:



MVP (Enterprise Security)
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