On 10/22/2017 09:31 AM, David Jones wrote: > > You hard-coded the IPs based on their current SPF record? What if > things change and they start sending out different servers/IPs?
If they add IPs, then either, a) I never know because we don't get spam from them -- great. b) We get spam from them, and I track down and block the new IPs. If they release some of their IPs on the market, whoever buys them will have to complain (our postmaster address is in the rejection message).
