What Protocol Does Outlook 2011 Mac Use For Exchange

WHAT PROTOCOL DOES OUTLOOK 2011 USE FOR EXCHANGE OFFLINE ADDRESS BOOKS

This method allows Outlook for Mac to connect to the server even when SSL 2.0 and 3.0 are blocked.Outlook 2011/2016/2019 for Mac and Entourage EWS setup using Autodiscovery. This allows the Outlook for Mac client to establish a connection by using the SSL protocol and then renegotiate by using TLS. Configure the Exchange server to support Compatible mode by using the instructions from KB article 980436.

It's also OK if you decide to restrict network traffic between internal clients and internal Exchange servers. These network ports are described in this topic.It's expected that you'll restrict network traffic between external clients and services and your internal Exchange organization. With Apple Mac and Hosted Exchange customers can now download Outlook 2011:Mac.Edge 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. 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.Microsoft Exchange is the worlds leading business communication and. Sharepoint uses an ActiveX control, owssupp.dll, and while the site is accessible in a web browser without this control installed, it's needed to provide the connection to Outlook.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:The reason it works perfectly in Windows is because the ActiveX controls and stssync protocol that provide this feature are supported only in Windows and not on Mac's.

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).Edge Transport servers have no involvement in the network traffic that's associated with these clients and services.Encrypted web connections are used by the following clients and services: For more information, see Client Access protocol architecture.Although 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.

What Protocol Does Outlook 2011 Use For Exchange Offline Address Books

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.IMAP4 is disabled by default. Autodiscover (fallback when 443/TCP isn't available)Whenever possible, we recommend using encrypted web connections on 443/TCP to help protect data and credentials. Outlook on the web (redirect to 443/TCP) Offline address books in Exchange ServerUnencrypted web connections are used by the following clients and services: Autodiscover service in Exchange Server Outlook on the web (formerly known as Outlook Web App)For more information about these clients and services, see the following topics:

For more information, see Send connectors created automatically by the Edge Subscription.The default Receive connector named 'Default Frontend ' in the Front End Transport service on the Mailbox server listens for all inbound mail (including mail from Exchange 2013 or later Edge Transport servers) on port 25.Outbound mail - Internal Exchange organization to Edge Transport serverOutbound mail always bypasses the Front End Transport service on Mailbox servers.Mail is relayed from the Transport service on any Mailbox server in the subscribed Active Directory site to an Edge Transport server using the implicit and invisible intra-organization Send connector that automatically routes mail between Exchange servers in the same organization.The default Receive connector named 'Default internal Receive connector ' on the Edge Transport server listens for SMTP mail on port 25 from the Transport service on any Mailbox server in the subscribed Active Directory site. Note that coexistance with Exchange 2010 isn't supported in Exchange 2019.For more information, see Mail flow and the transport pipeline.The network ports that are required for mail flow in Exchange organizations that have Edge Transport servers are described in the following diagram and table.Inbound mail - Internet to Edge Transport serverThe default Receive connector named 'Default internal Receive connector ' on the Edge Transport server listens for anonymous SMTP mail on port 25.Inbound mail - Edge Transport server to internal Exchange organizationMailbox servers in the subscribed Active Directory siteThe default Send connector named 'EdgeSync - Inbound to ' relays inbound mail on port 25 to any Mailbox server in the subscribed Active Directory site. Specifically:Mail from an Exchange 2013 or later Edge Transport server first arrives at the Front End Transport service before it flows to the Transport service on an Exchange 2016 or Exchange 2019 Mailbox server.In Exchange 2016, mail from an Exchange 2010 Edge Transport server always delivers mail directly to the Transport service on an Exchange 2016 Mailbox server. Mail always flows from the Transport service on a Mailbox server in the subscribed Active Directory site to the Edge Transport server (regardless of the version of Exchange on the Edge Transport server).Inbound mail flows from the Edge Transport server to a Mailbox server in the subscribed Active Directory site. For more information, see Configure Send connectors to proxy outbound mail.DNS for name resolution of the next mail hop (not pictured)See the Name resolution section in this topic.Network ports required for mail flow with Edge Transport serversA subscribed Edge Transport server that's installed in your perimeter network affects mail flow in the following ways:Outbound mail from the Exchange organization never flows through the Front End Transport service on Mailbox servers.

What Protocol Does Outlook 2011 Mac Use For Exchange