I have a website hosted with netfirms.com.
My domain name has a custom MX record for my mailserver, as configured in netfirms.com's domain manager control panel system.e
A third party company is redoing my website and they want to host the website, so they have asked me to change over my nameservers to their own nameservers, that way the domain will point to them instead of netfirms. Netfirms' control panel has a section for this called "Custom Nameservers". I'll be changing the values from "ns1.netfirms.com, ns2.netfirms.com ... etc" to "ns1.somecompany.com, ns2.somecompany.com...."
Will making this change affect my MX records? I.E. am I now going to have to have this third party company keep track of my mx records for my mailserver?