dns - sendmail - alias ip address

[klavrynd]

I'm running 2 local domains one one box. I made an alias ip for my nic so i can access the two domains on different ip's.
Now i want to install mail for both domains, using sendmail ( i need to use sendmail so please don't tell me to use exim/qmail/postfix/...) . I've been fiddling with it for a bit, i don't even know if it's possible what i want

say domain1 has ns/www/ftp/mail all on 192.168.0.5
and domain2 has ns/www/ftp/mail all on 192.168.0.15

Do i need two sendmail instances, one for each domain, or can one sendmail instance handle mail for both domains? If i'm using one instance, i'll need to change the MX record in one domain to the ip that sendmail is listening on, or can i set sendmail to listen on multiple ip addresses?

and then the obligatory stupid question, i'll need to make users for every user i want to give an email account, won't i?

[Kruegi]

Just set up sendmail to listen to all IPs, configure the local domains and map the mail addresses to the account in the virtual user table.
Sendmail will handle the domain itself.

Thomas