[otrs] $Self->{FQDN}

Hi, I am using OTRS on a host where we have virtual domains for email and hosting. The config file specify only one var for both of them, i want to make the difference between email and hosting and not to use the same $Self->{FQDN} for both, the email and the link to the ticket. I don´t what to use the same. For example: email: otrs@someplace.com link: http://www.otherplace.com/otrs/index.pl?Action=AgentZoom&TicketID=1234 Is there any way to do that? Jorge