Posts made by Leigh

• Mailing list member editor

  Hello Miroslaw, The Up and Down buttons help you with managing mailing list users' permissions when you use Groups containing local users. Mailing lists process permissions in the order in which t...

  posted in MDaemon

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  Leigh
  1/2/26, 9:28 AM
• Cloudflare and Mdaemon

  @Allen  This is from the MDaemon Help file topic on ActiveSync: ActiveSync is a web-service extension that only works on ports 80 (for http) and 443 (for https). This is an ActiveSync ...

  posted in MDaemon

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  Leigh
  1/2/26, 7:42 AM
• Cloudflare and Mdaemon

  Hello @Allen, We would need to know a bit more about what you're seeing when you say MDaemon is not working. What specifically is failing? Is an SMTP connection making it to MDaemon and failing? W...

  posted in MDaemon

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  Leigh
  12/30/25, 11:59 AM
• Authentication errors between MDaemon and migrated MS 365 domain

  Hello @Abel,  We have an article at https://knowledge.mdaemon.com/configure-mdaemon-microsoft-365-to-use-the-same-domain-name that may help you out. Essentially, you need to allow Microsoft 3...

  posted in MDaemon

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  Leigh
  12/30/25, 10:10 AM
• Mdameon Sender Rewriting Scheme

  @Opus  Merry Christmas to you as well! Arron is out of the office today, but he asked me to let you know that the development team is still working on this, and we do not have a fix as yet.&n...

  posted in MDaemon

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  Leigh
  12/29/25, 10:05 AM
• 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