DNS should be one of the most important elements of your business. It controls your email, apps AND your website.
If you cross your fingers as you type your DNS entries into a web form at your registrar PLEASE learn how important it is by reading this short article.
I recently spent a couple of hours sorting a major DNS screw up for a client. The bill was hundreds of pounds. The cost of website and email being down for 30 hours, who knows?
How much would it have cost to avoid it by managing things properly ... £24 per year.
£24! Per year!
Prevention is always better than cure. Expertise is always safer than crossed fingers.