I have serious concerns about losing incoming e-mail. My main domain is hosted on dwelling.
I'm an avid Facebook and Twitter user, and I'm getting almost daily warnings from both of those sites saying they are trying to send e-mail to
mymainaddress@mydomain.com and it's bouncing back to them so they think it's not a real e-mail address. So I reconfirm it, and it usually works normally, then the next day the same thing happens.
However, sometimes I do get mail from both Facebook and Twitter. So the problem is intermittent.
Today I just got word from a couple of friends who verbally told me they sent me e-mails that I never got.
That makes me wonder how many other e-mails out there are getting lost.
This is not an e-mail client problem. I use a variety of e-mail clients (Apple Mail, iPhone, iPad, Thunderbird, and Lunarpages-provided Roundcube webmail) and the missing messages don't appear in any of those clients, nor are they being caught by the Lunarpages-provided SpamAssassin.
What can I do to troubleshoot this? I'm very worried that I'm losing important e-mails.