So I have to confess that I'm not a network admin so my knowledge of DNS is very limited, and I think I've screwed something up.
I own a domain--let's call it
mydomain.com. I had my hosting provider set it up so that
email@example.com forwards to
firstname.lastname@example.org (my Gmail account). This seemed to be working fine; when I would send an email to
email@example.com I would receive it in my Gmail inbox, and when friends would send to that address I would likewise receive it. When we originally set that up (and when it was working), I don't believe we had any MX records for
mydomain.com at all.
A little later I started using an email sending service. (Something along the lines of MailChimp, although it was not MailChimp.) Let's call it
mysender.com. I noticed that anytime I would try to send to
firstname.lastname@example.org using MySender, it wouldn't work. It would never go through. Using that service, sending to anybody else from
email@example.com worked perfectly! But when I tried to send mail from
firstname.lastname@example.org using that same service, it would never come through.
So I started doing a little digging trying to find out why that was, and one site I found suggested that I needed to set up MX records for the domain in the DNS. So I just did that yesterday, and now I'm afraid that I screwed things up, as no mail at all seems to be flowing through anymore. Now even when I send to
email@example.com from Hotmail or something like that, it no longer shows up in my Gmail inbox.
These are the records I added. Can someone tell me what I did wrong, and what I need to do differently?
mydomain.com MX 3600  mydomain.com mydomain.com MX 3600  smtp2.mysender.com mydomain.com MX 3600  inbound.mysender.com