HOW DOES AN EMAIL SERVER WORK ? WITH EXAMPLES











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Troubleshooting IMAP Connectivity: Unable to authenticate to IMAP server. IMAP command failed: Login failed.

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The first step is to check if the  Courier  IMAP server is accepting connections. Open a terminal window and type: telnet hostname 143 Replace  hostname  with the  IMAP  server's  DNS  name. This expected results would look like this: $ telnet imap.example.com 143 If you get the error "no login failed" then you need to check the following; 1. Make sure IMAP Service is running. 2.  You should make sure that you are using the correct password and that the mail username is in the format: 3. Make sure there is correct name in your exchange server certificate. Please check your certificate settings: Get-ExchangeCertificate | fl I noticed that the InternalConnectionSettings is pointed to Test2.contoso.com but the X509CertificateName is using Remote.domain.com. If there is a certificate with Test2.contoso.com, please change the X509CertificateName to it to have a try: Set-IMAPSettings -Identity Test2\1  -X509CertificateName Test2.contoso.com T...
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Setup previously failed while performing the action "BuildToBuildUpgrade". You can't resume setup by performing the action "Install".

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Setup previously failed while performing the action "BuildToBuildUpgrade". You can't resume setup by performing the action "Install". (Resolved) Because of this you will be unable to perform various actions like given below; /PrepareAD,  Upgrade, Uninstall etc..... This error occurred because of Action and Watermark keys are there in registry that's why exchange server remembers previous installation. So, what you will do ? You just have to remove those registry keys... There you go.............
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