Would any common MTAs in use have any problems with delivery to a
destination where a subset of its MXs are v4-only and another (non-
intersecting) subset are v6-only?
I presume that any rfc-compliant MTA would do the right thing.
At least in theory.
But would such an arrangement work in practice
Hello, does anyone have a Shaw (shaw.ca) mail contact?
Emails from one of our (transactional/app) domains, after four years of no
issues, are suddenly ending up in users' Shaw webmail spam folder and
aren't even being delivered to their mail client's spam folder. Users have
to add our domain as a
