How to configure different relay, masquerade and/or smarthost settings, based on recipient and/or sender address

My Google-fu is letting me down with this one.

Is it possible to EITHER/preferably configure sendmail to...

• masquerade the From address of any mail intended for [email protected] to appear as [email protected] and use smtp.aaaa.com to send it (with authentication)
• AND masquerade any mail intended for [email protected] (including those that share To, CC or BCC with above) to appear as [email protected] and use smtp.bbbb.com to send it (with different auth user/pwd)
• AND use smtp.cccc.com for any other non-local address (again, with different auth)
• AND store mail for local users, as it currently is in /var/spool/mail/$USER

...OR configure sendmail to...

• use smtp.aaaa.com (with auth) to send any mail appearing to be From [email protected]
• AND use smtp.bbbb.com (different auth) to send any mail appearing to be From [email protected]
• AND use smtp.cccc.com (different auth) for any other non-local address
• AND store mail for local users, as it currently is in /var/spool/mail/$USER

...?

The sendmail server is not exposed externally, so this isn't a security/open-relay concern -- just trying to support a local app with limited mail config, that we're hoping to send to different parties with differing (mostly vanity) mail requirements.

I'm not a sendmail guy, by trade, and am only targeting sendmail because I understand it to be the de-facto on AIX7.1 and AIX7.2, which are the current- and next-validated OS for the proprietary app.

The server appears only to have an /etc/mail/sendmail.cf file, rather than a sendmail.mc (although a lot of /usr/samples/*/sendmail/*/*.m4). The server reports Version AIX7.1/8.14.4.

I think I need to enable mailertable (for the relay), genericstable (for the masquerade) and authinfo (for the auth), and use some combination of those to get what I'm after but, without a sendmail.mc, I'm at a loss as to how I do that.