April 21, 2015 - Network Solutions has recently adopted extremely aggressive IP blocking practices. If you use their web based email application, do not report spam directly to Network Solutions as it can cause our IPs to get temporarily blocked by them. When this happens, it affects delivery for any domains that are assigned the same filtering servers as your domain. In general, we do not recommend Network Solutions as an email provider as they have shown very little interest in keeping their customer's email flowing when problems arise like this.

We've noticed that several customers accidentally delete their SpamHero MX records by clicking on the Email reset button in the Network Solutions control panel:

The above messages makes it sound like this reset is needed to enable email services. This is not true. Their control panel is just assuming that if you change your MX records, your email will stop delivering to them. In other circumstances, that would be true, but not in this case.