W B Hacker wrote: > IIRC, the internet specifications are that <domain>.<tld> *must* be lower-case.
Neither spammers nor Microsoft tend to bother about detail like that.....
Hmm, I should also ask that $sender_helo_name docs be clarified in this
regard too, I guess!
>
> To an(y) MTA, that oridinarily applies to all characters 'to the right' of the
> '@' symbol.
>
> - so - no need for an MTA to handle those as anything but lower-case, and
> 'folding' to lower case is in order if needed.
Agreed - but does exim do it for the values as presented in these variables?
