Knowledgebase : Email Client
   

POP3 and IMAP are two different protocols used to access email. POP3 and IMAP function very differently and each has its own advantages. POP3 is useful in checking emails from a computer that is in a specific location. IMAP is the better option when you need to check your emails from multiple loc...
There have been issues regarding the widely used Microsoft Outlook, Mozilla Thunderbird, Apple Mail, and etc of late. The issue seems to be the blocked port 25. Source: UniFi website [http://www.unifi.my/Files/ServiceGuide/Third%20Party%20Email%20Setting.pdf] Steps to switch from default SMTP po...
If you get the error "550 Authentication is required for relay" when attempting to send email via Microsoft outlook, outlook express or other email client software. The reason is the email server is configured to require smtp authentication to send out outgoing email. In order to resolve this issu...
First, you need to login to the webmail to check whether there is any duplication. If the duplication only happens in the mail client, it might be because the internet connection is not stable or the size of the mail is too huge. When mail client downloads mails on behalf of the user, the whole pro...