[exim] Multiple domains with exim4.

Hi everybody,

I would like to know if is possible to send mails from differents domains
using exim4 as a smtp server. I have a /etc/mailname file with FQDN domains
(only one line). Have I to add a new line with the second domain name in
/etc/mailname file? Line per domain or using ";" between domains?

Thanks everybody.

Best regards,

Antonio.