I'm glad switching to 32 bit was an option for you.  Please also report the issue to Microsoft.  Maybe someday we'll get them to fix the issue.

Thank you Arron, 32 bit worked for me.

The Max RCPT command setting found at Setup | Server Settings | Servers does not have a way to exclude users from the restriction.  It is a global restriction.   There are a couple ...

My requirement was to restrict users from sending emails to more than 10 recipients at a time. I have successfully implemented this in MDaemon Email Server by setting Max RCPT commands allowed = 10...

I'm looking forward to the integration with BOX.NET.

Great, thank for letting us know you were able to fix the issue.

Hi Arron,  Again, another question, I have 3 domains in Mdaemon, and now SG is giving an authentication error in SG for the others domains (not the main one). Tue 2026-03-31 16:08:59: =...

It is working fine now. Thanks a lot for your help.  

Unfortunately this sounds like the bug in Outlook where it won't sync events to the server using ActiveSync.  You can find more details here, https://learn.microsoft.com/en-us/answers/question...

In SecurityGateway under Security | Anti-Abuse | SMTP Authentication, I would check all the boxes except "unless message is to a local account", , "unless message is from a domain mail server" and ...

Ah! I see, and in SG, how should SMTP Authentication be setup in security settings? I have currently enabled authentication in Domain Mail Servers. Thank you!

MDaemon is conifgured to require the credentials used to match the value in the FROM header.  To exclude SecurityGateway from this requirement login to MDaemon Remote Administration as a globa...

Activesync does not sync public calendar, Is this normal. We need to give up using mdaemon connector because outlook 365 classic cannot find related messages. Active sync does one way sync, gets th...

This is the log from SG with one email: Mon 2026-03-30 17:23:34: Attempting TCP connection to [192.168.50.14 : 25]Mon 2026-03-30 17:23:34: Socket connection established (192.168.50.22 : 53652 ->...

Please post a log snippet that shows the authentication issue occurring.  It would be helpful to see the session from MDaemon's log as well as the session from SecurityGateway's logs.

Hi Arrron, I've followed your recommendations and created the selector in SG, as well as added the TXT record to my DNS (now I have two selectors TXT in my DNS, Mdeamon and SG). My domain is on tr...

For now you'll have to use a selector created by SecurityGateway. I've submitted a bug for the development team to review.

When I try to import in DKIM Signing in SG I am getting the following error: Exception: Error while [Loading XSL: sign_selector_impoert.xsl]: Reason: The system cannot locate the object specified. ...

I'd suggest using the same selector you have configured in SecurityGateway for DKIM signing.  You can create a new selector in SecurityGateway if you'd like, just make sure that you publish th...

Hi Arron, Thank you for this information, it is what I was needed. When I set up SG I had authentication errors, and I could not solve them until I disabled the authentication for my domain in SG ...