Author: Florian Weimer Date: To: exim-users Subject: Re: [exim] Potential logic error in retry handling for IPv4+IPv6 hosts
* Marc Sherman:
> What's the fix for this? Have exim always explicitly query DNS for A if
> the additional section only returns AAAA (or vice versa)?
This is one approach.
> Or should the additional section not be trusted at all?
This is probably the safest approach, and it's also necessary to
comply with the letter of the SMTP RFC. The resolver can drop as many
data as it wishes from the additional section.
It would increase the number of DNS queries by quite a bit, though.
