I'm glad you were able to solve the issue, thank you for letting us know.

Microsoft 365 lets you share your calendar with external users. In Outlook, you can select "Share Calendar" and send a sharing invitation to an outside user. They can view your calen...

@Arron  Arron, The problem has been solved. The reason was an update from our GDATA protection(normaly MDAEMON is completely excluded)  and the server was in state of "reboot required"....

Please restart MDaemon again.  The error indicates that it was not able to connect to the data center.  I configured my MDaemon to point to the same data center you are using and was not...

@Arron  C:\>ping resolver1-mdaemon.ctmail.com Ping wird ausgeführt für resolver.1.geo.ctmail.com [84.39.152.31] mit 32 Bytes Daten:Antwort von 84.39.152.31: Bytes=32 Zeit=14ms T...

If you open a command prompt and run:  ping resolver1-mdaemon.ctmail.com What IP address is returned?

This is occuring because the connection is not being properly shutdown. Basically the sender is just closing the connection when they are done.  "The sender has finished using the connection a...

Which server is responding with 550 5.1.1 Recipient Unknown?  If its not MDaemon, what server is it? If it is MDaemon, MDaemon, by default, expects there to be a mailbox for all users of...

Hello, We see the following error in our MDaemon 24.5.2 Logs (Windows Server 2019) . MD Restart does not help. What is the reason ? What can we do ? Mon 2025-01-27 14:09:45.396: I [784B8F40] In...

ok, I attach a small log   Sat 2025-01-25 01:22:31.859: 05: Session 13028351; child 0003Sat 2025-01-25 01:22:31.859: 05: Accepting SMTP connection from 120.234.196.189:38427 to 10.0.0.8:465S...

So close! Mail from Exchange local mailbox user (mydomain.com) to an MDaemon mailbox user (same mydomain.com - but no user mailbox on the exchange server) now works by disabling SMTP Auth 'is alwa...

We do not have reccomendations for which load balancer to use.  Any load balancer that supports maintaining an entire session on the same server should be able to do what you need it to. You ...

Thank you @Arron  Can we use something like HAproxy as a load balancer? Or do you have any recommendation? I will talk with my team about this and see how complex could be. Also, is there a...

I know that each server will need its own MDaemon key. Does this include the Antivirus, ActiveSync, and other licenses as well? In other words, do we need to purchase each license twice? Yes...

If you can post a log snippet it would help us to figure out what is happening.  The other reports of socket error 590615 appear to happen when the device connecting to MDaemon terminates the ...

You can adjust these settings by going to Security / SMTP Authentication. Sorry, the menu is actually Security / Sender Authentication / SMTP Authentication and its in the MDaemon Remote Adminis...

Good day, We got a new server to replace our old one, but then we had the idea of setting up clustering. I have a few questions after reading the documentation:   I know that each serv...

Hello Matthew, I have uploaded 2 recent samples to sharefile and put this rule into testing. Ikarus AV is enabled and I see it is updating it's signatures and scanning messages.

Mdaemon 24.5.2 : in incoming smtp i get many Socket error 590615 sender has finished using the connection and initiated a shutdown:  sometimes the message is lost, is there any timeout value...

If our MDaemon server detected it as a virus, I would expect for Securitygateway to as well.  I do not have access to our server at the moment, but I will have the admin review the logs.I woul...