Kerio Connect - Administrators Guide - Kerio Software Archive

25.2 What services are availableSince public WiFi networks often do not support traffic on unencrypted protocols,SMTP on port 25 can be blocked. In such cases users cannot sent email out of the network.SMTPS on port 465 is usually allowed.SMTP Submission is a special type of communication which enables messages sent by anauthenticated user to be delivered immediately without antispam control. Allow SMTPSubmission if you use distributed domain.POP3POP3 protocol server allows users to retrieve messages from their accounts.IMAPIMAP protocol server allows users to access their messages. With this protocol, messages stayin folders and can be accessed from multiple locations at any time.NNTPNNTP is a transfer protocol for discussion groups over the Internet. The service allows usersuse messages of the news type and use the protocol to view public folders. Public folderscannot be viewed via NNTP if their name includes a blank space or the . (dot) symbol.LDAPLDAP server enables users to access centrally managed contacts. It provides read-only access— users are not allowed to create new nor edit the existing ones.If Kerio Connect is installed on a server which is used as a domain controller (in ActiveDirectory), it is necessary to run this service on non-standard ports or to disable them.HTTPHTTP protocol is used to:• access user mailboxes in Kerio Connect client• access the Free/Busy server• to automatically update Kerio Outlook Connector (Offline Edition)• to synchronize via ActiveSync or NotifyLink (BlackBerry)• publish calendars in iCal format89