[Mailman-Users] Can I use my ISP's SMTP server?

[Eric]

Hello all, I've recently upgraded to mailman-2.1.6 from an older version.
I currently host lists via a dynamic IP address, and because of reverse
DNS lookup, many IPS's will not accept mail from my server because
it is a dynamic IP. Is there any way to configure mailman to use my
ISP's mail server instead of my own sendmail smtp MTA?
Thanks!
Eric