I tried turning off my modem for a minute, but that didn't particularly help much (just gave me a few more minutes on gmail). Why would a Domain Name Server have trouble accessing webmail but work fine accessing other website? It seems webmail accounts are the ones that are not working. Google.com, Startpage.com and yahoo.com are working, but gmail.com, mail.yahoo.com and other webmail services are not.
Is it likely to be a problem with the DNS, the modem or the internet connection? I have installed Comodo and turned on their DNS, but I'm not sure if it applies to browsers (such as Pale Moon) other than Comodo Dragon, the Comodo offshoot of Chrome.