By default, MDaemon uses the account's mailbox value as the 'logon'
parm when using dynamic authentication with Windows to verify that an
account exists. Sometimes this parm does not match an actual Windows
account and so the verification fails. If you would like to use a
different logon for an account you can edit the account's HIWATER.MRK
file which you will find in his/her root mail directory and add the
following key:
[Settings]
NTLogonName=
From then on MDaemon will use this value when performing dynamic authentication on the mailbox in question.
Additional Comments
Requires MDaemon 9.x or higher and the account to be using NT Authentication for the MDaemon account password.