Mailgate and RT-Authen-ExternalAuth

How do I get mailgate to parse “From: user@address” and pass user,
instead of user@address, to RT-Authen-ExternalAuth for LDAP
authentication and automatic creation of user?

Thanks, in advance, for your help,

Mike

How do I get mailgate to parse “From: user@address” and pass user,
instead of user@address, to RT-Authen-ExternalAuth for LDAP
authentication and automatic creation of user?

Thanks, in advance, for your help,

Mike