Currently I am trying to setup header spoofing and facing some difficulties.Explication of our organization :- we are working with 15 different clients- each client has an alias where he sends his support requests : support.client1@mycompany.com ; support.client2@mycompany.com .... support.client15@mycompany.com- each client's alias contains our global support mail address : support.allclients@mycompany.com- ticket filters (Addressee (To and CC) --> Contains --> support.client1@mycompany.com) are defined for each client and support.allclients@mycompany.com is a target channel for all of them - in the parameters of my support.allclients@mycompany.com gmail account I added the ability to Send mail as : support.client1@mycompany.com ; support.client2@mycompany.com .... support.client15@mycompany.com- email addresses support.client1@mycompany.com ; support.client2@mycompany.com .... support.client15@mycompany.com are added in the Admin Panel --> Emails -->Emails and the header spoofing is allowed on them, as well as on my support.allclients@mycompany.com- Fetching Email via IMAP or POP is enable for my support.allclients@mycompany.com gmail account (IMAP) as well as sending email via SMTP without authentification required and with Header Spoofing allowed.What we need is to be able to reply from osTicket via aliases :1. I receive the request from my client1 who sent a message on support.client1@mycompany.com.2. Ticket is created and automatically assigned to the TEAM.client1 support.3. Reply is posted by agent via osTicket --> for client this reply is sent by support.client1@mycompany.com (alias) and not by support.allclients@mycompany.comWhich are the steps to follow ? Maybe someone have the same kind of organization ?Maybe there is something to do with Default MTA ? Version used : v1.9.14 (8b927a0)