Question Create a connector

[SalvadorS]

Hello,

I have a domain under plesk and the client ask me to create a connector in order to send all the mail from this domain to an address in cisco: xxx.eu.iphmx.com

Also I have to add a header in all the mail with a X-OUTBOUND-AUTH but I don´t know how to do this and if it is possible to do this.

I need your help, thank you