Posts made by Leigh

• MDaemon performance : Server 2025 vs Windows 11

  Our System Requirements page lists examples along with number of users here: https://mdaemon.com/pages/mdaemon-system-requirements It does not really have examples for Windows 11, because that is...

  posted in MDaemon

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  Leigh
  10/17/25, 8:46 AM
• Detect and activate newer certificate feature

  MDaemon does not currently let you configure where it looks for certificates. It looks in the local machine's "Personal" and "Trusted Root Certification Authorities" certificate stores.  The c...

  posted in MDaemon

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  Leigh
  10/17/25, 7:55 AM
• Download Header Only messages appear blank

  @MARTIN Arron is out of the office at the moment. I would recommend looking at the steps he already suggested for the original poster: What does the MDaemon-Connector log on the MDaemon server s...

  posted in MDaemon Connector for Outlook

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  Leigh
  8/4/25, 8:09 AM
• LetsEncrypt stopped working with error: : 403 Invalid response

  Cameron, What http port is Webmail running on? Check in Webmail Settings | Web Server in MDaemon Remote Administrator, and see what is set for "Run MDaemon Webmail server using this TCP port (requ...

  posted in MDaemon

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  Leigh
  8/1/25, 12:17 PM
• Email signature for the Domain and automatically retrieve name, titles and other info

  Hi Paul, Are your users all using WorldClient? If so, in MDaemon Remote Administration, you can go to Webmail Settings | Settings and uncheck "Allow user-created signatures" You can find the same...

  posted in MDaemon

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  Leigh
  8/1/25, 9:56 AM
• LetsEncrypt stopped working with error: : 403 Invalid response

  Also, in MDaemon, under Setup | Domain Manager, expand the domain and click on Host name & IP. For "SMTP host name" what is the entry in there?

  posted in MDaemon

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  Leigh
  7/30/25, 1:08 PM
• LetsEncrypt stopped working with error: : 403 Invalid response

  @Cameron Can you check your Windows Scheduled Tasks and see if maybe someone added a task to run it from there perhaps?

  posted in MDaemon

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  Leigh
  7/29/25, 3:08 PM
• LetsEncrypt stopped working with error: : 403 Invalid response

  @Cameron Hello, Arron is out of the office at the moment, so I am following up on this. If you look on the page that you configure Let's Encrypt on, it shows the command line it will run at the bo...

  posted in MDaemon

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  Leigh
  7/28/25, 4:46 PM
• Calendar Publishing Feature Not Working

  @Fabio Thank you for the update.

  posted in MDaemon

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  Leigh
  7/16/25, 12:40 PM
• Default IMAP Folders

  Can you tell me is it possible to migrate from hMailServer i.e. import data from SQL? If you can export data from hMailServer into RFC822 format, it can be imported into MDaemon. If hMailServer...

  posted in MDaemon

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  Leigh
  6/18/25, 10:51 AM
• Default IMAP Folders

  Hello, Thank you for trying out MDaemon. When using an IMAP client, it's up to the client to create the folders it wants to use. I set up an account with Thunderbird to double-check the behavior....

  posted in MDaemon

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  Leigh
  6/17/25, 12:00 PM
• Error sending message! 501 5.5.4 Invalid or missing command argument(s)

  One more thing that I would recommend you check is to open the MDaemon\WorldClient\Domains.ini file in a text editor and make sure the entry SmtpHeloDomain is not blank. It should be: SmtpHeloDoma...

  posted in MDaemon

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  Leigh
  3/26/25, 11:36 AM
• Error sending message! 501 5.5.4 Invalid or missing command argument(s)

  The SMTP relay installs with IIS by default, but on reflection I don't think it is causing this issue, though I would definitely recommend making sure it is disabled. Is this something that you ar...

  posted in MDaemon

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  Leigh
  3/18/25, 1:57 PM
• Error sending message! 501 5.5.4 Invalid or missing command argument(s)

  In IIS is the SMTP relay enabled? If you disable it, are you able to send via Webmail?

  posted in MDaemon

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  Leigh
  3/17/25, 4:23 PM
• Error sending message! 501 5.5.4 Invalid or missing command argument(s)

  If the EHLO is empty, that makes me suspicious that the server that is answering is not actually MDaemon. Do you have any other services listening on port 587? Are you seeing the session in the We...

  posted in MDaemon

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  Leigh
  3/17/25, 3:15 PM
• Can't subscribe/unsubscribe to Public Folders

  In Outlook, are your users using IMAP or MDaemon Connector? In Webmail, under Settings | Folders | Display Settings is the option "Hide Unsubscribed Folders" enabled?

  posted in MDaemon

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  Leigh
  3/17/25, 8:39 AM
• Error sending message! 501 5.5.4 Invalid or missing command argument(s)

  What version of MDaemon are you using? Did this work in the past or is this the first attempt you've made to send mail in Webmail? When sending mail from Webmail, the beginning of the SMTP session...

  posted in MDaemon

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  Leigh
  3/17/25, 8:16 AM
• Calendar/Addressbook is not visible or lost

  Hi Martin, I was reading through the history of this issue again, and I want to make sure I correctly understand what is happening. Does this issue always get triggered by adding a user to a...

  posted in MDaemon Connector for Outlook

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  Leigh
  1/13/25, 4:38 PM
• Categories Names

  Hello Luca, I am not certain what you mean by share - are you asking about Outlook and Webmail sharing the same information or two users of Outlook and MDaemon Connector using categories in a shar...

  posted in MDaemon Connector for Outlook

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  Leigh
  1/7/25, 8:52 AM
• How to prohibit authorization in a specific (only one) account from all IP addresses except one?

  Hello Ekaterina, I see that you have sent in this question to our tech support via email. Please keep an eye out for the reply to that for assistance with this issue, they will be able to go into ...

  posted in MDaemon

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  Leigh
  12/26/24, 3:23 PM