Re: A possible looming problem with DMARC

Jeremy Nicoll - ml gem <jn.ml.gem.23@...> wrote:

> So, for me to send mail from addresses 'belonging' to a choir website, it
> should just work.  If in future it doesn't (eg if some recipient system
> was to insist on DNS records naming valid servers in use) then I should be
> able to fix that by updating the choir website's DNS to specify that the
> outbound mail servers I wish to use are allowed to send those mails...

Many, if not most, domains don't list those records so if the recipient
server were to suddenly insist on them, it would end up rejecting a lot of
mail. As more and more domains add them, and the spam problem gets more
severe, it might be that servers do start to insist on them, but I can't see
that happening in the short to medium term, and it's certainly not how these
verification systems are intended to work - where no records exist the
assumption is supposed to be that the domain owner wants no restrictions on
mail from that domain.

But, yes, should you find yourself in that situation in the future, adding
the necessary records should fix it, even if it's a record explictly stating
that any server may send mail from that domain.

-- 
Mark Sawle                                                www.intellegit.com
Intellegit Ltd.
Developers of Messenger Pro: multi-platform mail, news and calendar software

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