title: Emails bounced from Gmail only
body: <p>We've got a shared hosting account for the website and email of a small trail association.  About a week ago, people started complaining that their emails to us were being bounced with the message "DNS Error: 1421891 DNS type 'mx' lookup of [xxxx.org] responded with code SERVFAIL".  However, the  email system was working fine for everyone else.  It appears that only @gmail.com addresses are receiving this error, though I can't be entirely sure.</p>
  
  <p>The hosting service insists that their server is running just fine, so the problem can't be on their end.  I've been pretty dissatisfied with this host, though, and I don't see any chatter on the internet about Gmail problems.  So what should I try next.</p>
  
  <p>One other oddity:  when I run the site through <a href="http://www.isitdownrightnow.com" rel="nofollow noreferrer">http://www.isitdownrightnow.com</a>, it tells me that the site is down, even though it seems to be running just fine.</p>