David Lee wrote:
> (Linux FC5, sendmail 8.13.7)
>
> The use made by "check_mail" of the "From:" tag in the access database is
> nicely flexible, allowing (for exmaple) entries both of simple domains
> (e.g. "dom.ain") and full email addresses ("a.person@dom.ain"). For
> instance the "dom.ain" style entries can be imagined as having the
> high-level effect of pattern-matching anything at that domain.
>
> (Hold that flexibility in mind and step sideways...)
>
> For some time we've had our own "check_compat" ruleset, and it would seem
> worthwhile replacing this with the supplied "FEATURE(compat_check)", if
> reasonably possible.
>
> But this feature seems only to allow exact names:
> Compat:me@here<@>them@there
>
> As I read it, it doesn't permit the sender or recipient to be some sort of
> pattern (domain only, sendmail classes, etc). Our own rules make
> extensive use of things such as "$j", "$=R" to determine OK/ERROR result,
> including treating <@$+.$=R.> differently from <@$=R.>


Can you make your rulesets available as a patch and/or m4 file?

Also check_mail only has access to recipient information if you are
using delay_checks

On the other hand, check_rcpt always has access to sender information.