FAQ: How To Allow Local Devi To Relay 23013 Exchange?

How do I enable SMTP Authentication in Exchange Server?

Enable SMTP AUTH for specific mailboxes

  1. Open the Microsoft 365 admin center and go to Users > Active users.
  2. Select the user, and in the flyout that appears, click Mail.
  3. In the Email apps section, click Manage email apps.
  4. Verify the Authenticated SMTP setting: unchecked = disabled, checked = enabled.

What is Exchange anonymous relay?

In Exchange Server, you can create a dedicated Receive connector in the Front End Transport service on a Mailbox server that allows anonymous relay from a specific list of internal network hosts. Restricting access to the Receive connector is critical, because you don’t want to configure the server as an open relay.

What is SMTP Relay in Exchange Server?

An SMTP relay is a protocol that allows email to be transmitted through the internet, from one server to another, for delivery. It was first created in 1982 and continues to be the internet standard that is widely used today.

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How do I create a relay connector in Exchange 2016?

The steps for how to configure Exchange Server 2016 SMTP relay are:

  1. Determine whether your scenario is internal relay or external relay.
  2. Determine whether devices and applications will authenticate or connect anonymously.
  3. For authenticated relay, configure the TLS certificate for the client front end connector.

How do I find Exchange SMTP settings?

Find your Exchange mailbox server settings

  1. Sign in to your account using Outlook Web App.
  2. In Outlook Web App, on the toolbar, select Settings > Mail > POP and IMAP.
  3. The POP3, IMAP4, and SMTP server name and other settings you may need to enter are listed on the POP and IMAP settings page.

How do I change SMTP settings?


  1. Open the Email application.
  2. Press Menu and select Settings.
  3. Select Account Settings.
  4. Click on the email account you want to edit.
  5. Scroll to the bottom of the screen and click More Settings.
  6. Select Outgoing Settings.
  7. Check the Require sign-in option.

How do I enable my SMTP server IP?

Configuring the SMTP server

  1. In the administration interface, go to the Configuration > SMTP Server > Relay Control section.
  2. Select the Allow relay only for option.
  3. To specify a group of IP addresses from which users can send outgoing messages, select the Users from IP address.

What is SMTP relay connector?

Microsoft 365 or Office 365 SMTP relay uses a connector to authenticate the mail sent from your device or application. This allows Microsoft 365 or Office 365 to relay those messages to your own mailboxes and external recipients.

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How do I find my SMTP Relay Exchange 2010?

Allow Relay from an IP with Exchange 2010 and 2007

  1. From the Exchange Management Console > Server Configuration > Hub Transport > New Receive Connector.
  2. Give the connector a name and select Custom > Next.
  3. Next.
  4. Add > Add in the IP address(s) or network you want to allow relay from > OK.
  5. Select the 0.0.
  6. Next.
  7. New.
  8. Finish.

How do I setup a SMTP server?

How to configure an SMTP server

  1. Select the voice “Account Settings ” in your mail client, generally in the “Tools” menu.
  2. Choose the “Outgoing server ( SMTP )” voice:
  3. Push the “Add…” button in order to set a new SMTP. A popup window will appear:
  4. Now simply fill the voices as follows:

How do I find my SMTP relay server name?


  1. Open up a command prompt (CMD.exe)
  2. Type nslookup and hit enter.
  3. Type set type=MX and hit enter.
  4. Type the domain name and hit enter, for example: google.com.
  5. The results will be a list of host names that are set up for SMTP.

Why do we need SMTP server?

Why are SMTP servers important? Without an SMTP server, your email wouldn’t make it to its destination. Once you hit “send,” your email transforms into a string of code that is then sent to the SMTP server. The SMTP server is able to process that code and pass on the message.

How do I enable SMTP on Exchange 2016?

Microsoft Exchange 2016 – SMTP Connector – Setup Guide

  1. Open the ‘ Exchange Administration Center’ (EAC)
  2. Login to the EAC as an administrator.
  3. In the left hand column select ‘Mail Flow’
  4. Enter the name as ‘AuthSMTP’, this is just a reference for the connection.
  5. Tick ‘Route mail through smart hosts’
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How do I open port 25 on Exchange Server 2016?

Run PowerShell as administrator. Test both ports 443 and 25 against the public IP, this is for incoming connections. Test port 25 against the Exchange Server, this is for outgoing connections. If it shows the TCP Test Succeeded value as True, you’re good to go.

How do I change my SMTP port for Exchange 2016?

Right-click the Default SMTP Virtual Server object, and then click Properties. On the General tab, click the Advanced button, click the Edit button, and then set the Transmission Control Protocol (TCP) port to 2500 (or whatever new value you require).

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