we have a new blank installation of SmarterMail on Linux
SmarterMail Version: 9280 (Mai 29, 2025)
Ubuntu 24.04.2 LTS
LDAP Server Windows Domain Controler 2016
when we try to create a new Authentication Provider LDAP
when we fill out the form and click on Continue
we got the error message "The type initializer for 'Ldap' threw an exception."
we test connection to ip address and port 389 from linux shell, it's posible
we installed ldapsearch and test username and credentials ist okay
no mater when we try wrong ip address or wrong credentials always the same error message.
so just for testing we installed SmarterMail on a Windows server to try the same settings for LDAP it works on Windows , but i still find no way to get it working on Linux.
has anyone LDAP Authentication working on Ubuntu or an other Linux?