What is Hadiscard?

What is Hadiscard?

HADISCARD. A shadow message was discarded after the primary copy was delivered to the next hop. For more information, see Shadow redundancy in Exchange Server. HARECEIVE. A shadow message was received by the server in the local database availability group (DAG) or Active Directory site.

What is intra organization SMTP send connector?

The intra-organization Send connector exists in the transport services to send mail, either internally between services on the local Exchange server, or to services on remote Exchange servers in the organization. For example: Front End Transport service to the Transport service.

How do I find Exchange SMTP logs?

You can check the SMTP logging status in Exchange admin center. Go to mail flow > receive connectors. Select the Exchange Server that you want to check. Select the SMTP relay receive connector and check in the details pane if it shows Logging – On.

How do you trace a message?

Open message trace In the Microsoft 365 Defender portal at https://security.microsoft.com, go to Email & collaboration > Exchange message trace. To go directly to the message trace page, use https://admin.exchange.microsoft.com/#/messagetrace. At this point, message trace in the EAC opens.

What is MaxInboundConnectionPerSource?

This event indicates that the remote server has reached the maximum number of simultaneous incoming connections to the receive connector. This value is specified by the MaxInboundConnectionPerSource parameter, and the default value is 20.

What is email message tracking?

Email tracking is a method for monitoring the delivery of email messages to the intended recipient. Most tracking technologies use some form of digitally time-stamped record to reveal the exact time and date that an email was received or opened, as well as the IP address of the recipient.

What is categorizer in exchange?

A categorizer, also known as SMTP Categorizer is used in Exchange Servers as a component in the Transport service which performs Active Directory LDAP queries to determine what do do with an incoming on outing message based on information and destination.

What is a smart host connector?

A smart host is a type of mail relay server which allows an SMTP server to route e-mail to an intermediate mail server rather than directly to the recipient’s server. Often this smart host requires authentication from the sender to verify that the sender has privileges to have mail forwarded through the smart host.

How do I check my Exchange Online log?

All Office 365 audit logs are unified into a single system, and Exchange logs are no different. To search for them, you’ll have to log on to Office 365 with an admin account, go to the Office 365 Security & Compliance or the newer Microsoft 365 compliance portal, and navigate to the Audit log search.

Can you trace email?

You can trace an email address to its sender by looking at the full email header. The email header contains routing information and email metadata—information you don’t normally care about. But that information is vital to tracing the source of the email.

Does message trace show deleted messages?

even if the message is deleted or not, as an administrator you will be able to perform message trace for last 90 days. to answer your question. yes, the email deleted on 11th september will be available on message trace report.

How do you add remote IP addresses to existing Receive connectors?

Sign in to Exchange Admin Center. Click in the feature pane on mail flow and follow with receive connectors in the tabs. Select the Exchange Server, which has the receive connector to add the remote IP addresses to. Click the receive connector in the list view and click the edit icon in the toolbar.

Is it illegal to track emails?

There is no prohibition under United States federal law to the use of web beacons to track whether someone has opened an email. While most state laws do not implicate the use of web beacons, a plaintiff may argue their use is covered by the California CCPA.

What does a categorizer do while mail routing?

The categorizer is a component of the Transport service that processes all incoming messages and determines what to do with the message based on information about their destinations. Routing in Exchange 2016 and Exchange 2019 is virtually unchanged from Exchange 2013.

What is the difference between Hub transport and Edge transport?

The big difference is that the Edge server is deployed inside the DMZ whereas Hub Transport servers never are, so the code that runs on each server type is very different and even where similar functionality exists, Microsoft normally uses different default settings for the two server roles.

How does a smart host work?

A Smart Host relay service provider is an intermediary email server located between the sender’s outgoing server and the recipient’s incoming server. Smtp smart hosts used to work as an open mail relay, a kind of SMTP server that allowed users to send emails without authentication directly to the recipient’s server.

How do I setup a smart host?


  1. Open Exchange Admin Center.
  2. Navigate to Mail Flow -> Send Connectors and select the send connector.
  3. Choose the Route mail through smart hosts option from the delivery section.
  4. Click Add+ in the Add smart host window.
  5. Select Basic Authentication and enter the username and password you were also provided.

What is the SMTP server for Office 365?

Office 365 SMTP Settings

SMTP Address smtp.office365.com
SMTP Port 587 (with TLS)
Authentication Required
SSL Protocol Off
TLS Protocol On