On Monday, April 6, 2020 11:17:58 PM CEST Ashley Dixon wrote: > On Mon, Apr 06, 2020 at 11:34:02AM -0600, Grant Taylor wrote: > > On 4/6/20 6:35 AM, Ashley Dixon wrote: > > > Hello, > > > > Hi, > > Hello, > > [O.T.] Unfortunately, Grant, I cannot reply to your direct e-mail. My best > guess is that you have a protection method in place in the event that the > reverse D.N.S.\ does not match the forward ? As I'm on a domestic I.P., > this is out of my control (i.e., `nslookup mail.suugaku.co.uk` returns my > I.P., but `nslookup <I.P.>` returns some obscure hostname provided by my > I.S.P.).
I am afraid most (if not all) ISPs will reject emails if the reverse DNS does not match. Using a dynamic range is another "spam" indicator and will also get your emails blocked by (nearly) all ISPs. I would suggest putting your outbound SMTP server on a cheap VM hosted somewhere else. Or you get an outbound SMTP-service that allows you to decide on domain name and email addresses. -- Joost
