Hi,
I am a Technical Director of Cubic with 23 years of expertise professional experience, we have deployed Linux Server, Windows Server, Exchange Server, Lotus Dominos, Zimbra etc for many of our clients, we are messaging experts. Please check our portfolio and previous projects completed on Enlace.
Definitely, we would assist you on your email issue, trouble shoot, fix dns issues and provide help on the similar tasks as this is one of our prime focus area we work on regular basis.
I am available on skype for further discussion, please share your skype ID to take it forward
Regards,
Manoj