Paul bought a Helm email server, but he's having issues. He called the support service, and they helped him solve the issues. They give good support!
Lori can't get access to her Exchange server. Her password doesn't work ever since an employee who was running it left the job. Leo suspects he changed the passwords before he left. But if she has physical possession of the server, she should be able to change the passwords. If the employee has access to her server, then he has control, even outside of the company. So Lori will have to go to him or the company he represents and get the passwords. If he's proven to be untrustworthy, then they'll probably have a hard time getting that information.
Brett wants to set up his own mail server. Leo doesn't recommend it, though. There's a lot of traffic that would have to run through his own computer. Since ISPs don't want customers to become spammers, they frown on such activities. ISPs will often block outbound servers that use port 25. So if he's in earnest, then Leo recommends using the SSL outbound port 465. He should always talk to the ISP before setting up his own mail server, because they could dump him. Another option is to use Google's server: 18.104.22.168.