@Abel  This appears to be related to the same issue from an earlier forum post.  There is a fix in place for this in MDaemon 23.0.2, which is currently in beta testing and should be avai...

Update, those wrk files are the same email. But different file name and date, this started yesterday.

It is starting to happen more often. Upon checking the c:\mdaemon\queues\temp\ folder, I noticed that all the *.wrk files appear when the error occurs. Each of them has a size of 27,718kb or 27,71...

Good day, Since yesterday, I have been getting CFEngine stopped and restarted errors, although not too frequently. I checked the antivirus log and found the following error: * SMTP ERROR: Clam...

Unfortunately, other urgencies prevented me from investigating and responding. However, I anonymised the configuration files for a reverse proxy I used in front of MDaemon in a couple of installat...

Unfortunately, other urgencies prevented me from investigating and responding. However, I anonymised the configuration files for a reverse proxy I used in front of MDaemon in a couple of installat...

Wow!!! I'm so glad you were able to find the cause of the issue and thank you for sharing with us!

Update. I've identified what was causing the problems with the "connection established" not returning the correct network card ip address and the systems inability to verify the "SSL Certificate" ...

Under domain.com\Contacts, the contacts that do not show up in the popup box are not in the listing.  There are 3 that I know of that are missing, and they are some of the oldest addresses in ...

If you go to the domain.com\Contacts folder in webmail, do contacts exist for the users in question? In MDaemon under Setup / Server Settings / Public & Shared folders, are the options enabled...

The users are using the Look-Out theme.  The problem occurs in all themes. I clicked Hide Unsubscribed Folders to show the subscribe check box, and hovering over the Contacts subscribe check ...

I have been able to find very little information on the CRYPT_E_NO_REVOCATION_CHECK error.   Something in the enviroment is preventing the revocation check from working.  Other than ...

So, it appears from your last message, there's nothing further we can check, or parameters to change to effect  this problem -- which is unfortunate. Thank you for your time on this issue.

MDaemon is using Windows API functions for the certificate checks.  CertGetCertificateChain CertVerifyCertificateChainPolicy MDaemon always logs the errors that are returned, but in this ca...

Are the users subscribed to the domain.com/Contacts folder?  This can be found by going to Options / Folders. Can you confirm that the user has Read access to the domain.com/contacts folder? ...

"can you disable MTA-STS and RequireTLS?" Both had previously been disabled.  I'll certainly pull together today's SMTP (out) log file and email it out ASAP.

If the firewall is showing the traffic coming from the correct IP, I wouldn't worry about the IP that is in MDaemon's log.  We are using the only Windows function we are aware of to get the lo...

"The latest screen shot, which I think is from the firewall, shows the source IP as 192.168.21.251, so does that mean its working? What is reported by the firewall is certainly a step in the right...

It appears your ACL is different from mine with different access rights. Are you signed in as Administrator? Also, your example references an email address as "anyone@". For comparison, I am using...

 As I understand everything is ok there -