Wednesday , January 13 2021

How to Enable and Configure POP-IMAP In Exchange 2013

open Services.msc – Set IMAP and POP services to automatic and start it

Its recommended to stop using POP services and configure only IMAP


or Use Powershell

Using PowerShell –

Start-Service MSExchangeIMAP4; Start-Service MSExchangeIMAP4BE
Set-Service MSExchangeIMAP4 -StartupType Automatic; Set-Service MSExchangeIMAP4BE -StartupType Automatic


If you are having a wild card certificate make sure you run the below commands. so that POP and IMAP services can connect to this FQDN

To be Run on all CAS Servers

Set-ImapSettings -ExternalConnectionSettings "","" -X509CertificateName
Test-ImapConnectivity –ClientAccessServer Servername -Lightmode -MailboxCredential (Get-Credential)

Also Run

Get-ReceiveConnector "*\client Frontend*" | Set-ReceiveConnector -AdvertiseClientSettings $true -Fqdn

(if you want clients that connect through the server with FQDN to be able to look up their own SMTP setting.


Restart Pop and IMAP services to Take effect.

Restart-Service MSExchangeIMAP4; Restart-Service MSExchangeIMAP4BE

Outlook 2016 Client Settings for IMAP to work.




About Satheshwaran Manoharan

Satheshwaran Manoharan is an Microsoft Office Server and Services MVP , Publisher of Specialized in Office365 / Microsoft Exchange / Virtualization , Sathesh is an Messaging Expert supporting/Designing/Deploying many medium size businesses to large enterprises when it comes to Corporate messaging and Virtualization Infrastructure

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  1. I am not able to send emails to the outside organization from IMAP account.

    Your message did not reach some or all of the intended recipients.

    Subject: Aliuddin
    Sent: 8/20/2014 1:29 PM

    The following recipient(s) cannot be reached:

    ali on 8/20/2014 1:29 PM
    Server error: ‘550 5.7.1 Unable to relay’

  2. Configure your Send Connector to mail route mail outside with SMTP * else it not transport outside

  3. I have exchange 2013 2 Mailbox servers and 2 CAS i need to enable pop3 for internal users only, i can’t change internalconnectionsetting to Set-POPSettings –internalConnectionSetting {}
    and it points to mailboxserver 1 only

  4. One of our user has ” 2 mailboxes which are being used in an application for triggering emails using IMAP4. One mailbox is working fine, however other is throwing login failure error. We’ve the exact same settings from Exchange standpoint. We’re running Exchange 2013, CU13, Version 15.0 ?(Build 1210.3)?. Unable to configure outlook for the account using imap settings”

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