Local email server - View of emails problem

Local email server - View of emails problem

Dear sirs

I download the trial version to test it and i get a error message whe i try to install some local emails

I have my email server at the same PC with Zoho Virtual office.
What settings i must put to Settings-Admin-System setting to use my local email server?
Can i use the same settings for each user's acount ?

I try to put "localhost" or the name of the PC or the ip of the PC but all the time i get hte message : Error Message: EOF on socket


I dont have problems with all others emails that they are not local to me email server like @yahoo.com or @gmail.com

And something more sirs. I can not view any html message on Personal - email task. All i see is the message but not the include it

Best Reg.
I future Customer
Peter Panagiotopoulos