Specifying an interface in Sendmail

[Peramslist]

Hi I've installed Sendmail 8.12.9 on Redhat Linux 9. But since I'm quite new to the sendmail and knowing that most of you gurus use sendmail, I am posting this question. I did a search on the web for this but no link pointed to what I'm looking for. I'd appreciate if you can let me know how I can specify sendmail to use interface eth0.   Regards,   Peram