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Descargar anysend para windows 105/30/2023 ![]() ![]() For more information, see POP3 and IMAP4 in Exchange Server. However, you may find that some services must be configured to use unencrypted web connections on 80/TCP to the Client Access services on Mailbox servers. Whenever possible, we recommend using encrypted web connections on 443/TCP to help protect data and credentials. Autodiscover (fallback when 443/TCP isn't available).Outlook on the web (redirect to 443/TCP).Unencrypted web connections are used by the following clients and services: Offline address books in Exchange Server.Autodiscover service in Exchange Server.Outlook on the web (formerly known as Outlook Web App)įor more information about these clients and services, see the following topics:.Offline address book (OAB) distribution.Similarly, the table doesn't have a source column because the source could be any location that's external to the Exchange organization (for example, the internet or an accounts forest).Įdge Transport servers have no involvement in the network traffic that's associated with these clients and services.Įncrypted web connections are used by the following clients and services: For more information, see Client Access protocol architecture.Īlthough the diagram shows clients and services from the internet, the concepts are the same for internal clients (for example, clients in an accounts forest accessing Exchange servers in a resource forest). In Exchange 2016 and Exchange 2019, Client Access (frontend) and backend services are installed together on the same Mailbox server. The destination for these clients and services is the Client Access services on a Mailbox server. The network ports that are required for email clients to access mailboxes and other services in the Exchange organization are described in the following diagram and table. ![]() Network ports required for clients and services These network ports are described in this topic. It's also OK if you decide to restrict network traffic between internal clients and internal Exchange servers. It's expected that you'll restrict network traffic between external clients and services and your internal Exchange organization. If you have firewalls or network devices that could potentially restrict or alter this kind of internal network traffic, you need to configure rules that allow free and unrestricted communication between these servers: rules that allow incoming and outgoing network traffic on any port (including random RPC ports) and any protocol that never alter bits on the wire.Įdge Transport servers are almost always located in a perimeter network, so it's expected that you'll restrict network traffic between the Edge Transport server and the internet, and between the Edge Transport server and your internal Exchange organization. We do not support restricting or altering network traffic between internal Exchange servers, between internal Exchange servers and internal Lync or Skype for Business servers, or between internal Exchange servers and internal Active Directory domain controllers in any and all types of topologies. ![]() Before we get into that, understand the following ground rules: This topic provides information about the network ports that are used by Exchange Server 2016 and Exchange Server 2019 for communication with email clients, internet mail servers, and other services that are external to your local Exchange organization. ![]()
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