Hi Mike, ~all denotes "soft fail". In other words that means that if you forget to add an IP address of your new server to SPF it is not going to be a total failure :) Soft fail allows to undertake other steps in case it happens (say i.e. you could perform other checks to determine if the email comes from a bona-fide and genuine source or was that only the sys admin that has forgotten to add the ip to the SPF). In essence it tells other servers not to mark the message in case it is not SPF positive.
That's how I get it. P. On Tue, Jun 9, 2015, at 07:39 AM, Michael B Allen wrote: > On Tue, Jun 9, 2015 at 12:42 AM, DTNX Postmaster <postmas...@dtnx.net> > wrote: > > On 09 Jun 2015, at 05:20, Michael B Allen <iop...@gmail.com> wrote: > > > >> I have never setup SPF records before. I have one server doing > >> everything although it has two names www.busicorp.com and > >> mail.busicorp.com. > >> > >> My understanding is the following is probably what I want: > >> > >> v=spf1 mx ~all > >> > >> Would you agree? > > > > Is 'busicorp.com' actually the domain name for your server? Because it > > already has a SPF record, and its mail is hosted by Microsoft. > > > > Don't make up random domain names for questions. Use only domains you > > actually control, or the example domains defined in RFC 2606. > > No. My domain is not busicorp.com. > > Thanks for the advice, > > Mike
