Milter-greylist

Is it the intended behavior for domaincmp() to only match the end of a
domain?  For example, we had to whitelist ey.com for Ernst & Young,
and  domains like monkey.com and grimey.com, etc., also get whitelisted.

Shouldn't the functionality be that the full domain should match?
If subdomains are supposed to match, then a dot should be added at the
start of host and domain variables in domaincmp() before the
comparison is done.

If this is not the intended behavior, then one possible fix is to add
the code:
        if (hidx >= 0)
                return (0);

after to the current code:
        if (didx >= 0)
                return (0);

I have not tried/tested this yet.