Could you provide recommendations for setting up DKIM DMARC?

@Tyler  If I understand correctly, it is impossible to display the original From header from which the mail was sent in the header of the letter? And filter only through BlackList or content ...

Another option would be to enable DMARC and create a DMARC policy for your domain.   This would require that you were also using SPF and DKIM, but it would prevent messages that used your...

The From Header modification will expose senders who are trying to spoof the display name by placing the address inside of the display name.  In your message source, there is not a display nam...

Hello, Installed MDaemon v21.5.2 as corporate mail The other day we ran into a problem. The company's MDaemon was subjected to a phishing attack. Essence: the attack was carried out from an a...

And even more follow up testing.

following up on the follow up test

And another follow up test.

And a follow up test.  Thanks!

@Matthew McDermott This package cannot be installed on the server. It does not allow it.

@Javier Meilan regarding the iFilter error "LoadIFilter: Unexpected error." It looks like you did install the VS 2015 runtime. This error is different but doesn't tell me very much. I would try in...

@Bill Sorry, the message was quarantined by our server.  I just released the message from the quarantine this morning.  You should have it now, if you do not, let me know and I will resend.

@Arron Hi Arron, I never received the e-mail.

@Javier It is not caused by the issues with filterhost.exe.  Please see the thread Filter Error thread you started for a solution for that issue. If you can email me privately at arron.caruth...

@Bill I emailed you this morning with a new dll to try, please let me know if it fixes the issue for you.

After several tests I have come to the conclusion that the problem is the size of the file that the antivirus scans.   Same file with the difference in size.* With few data Mon 2023-01-23 1...

I have tried to disable the filtering, but it keeps stopping it. I think it's not a problem with filterhost.exe

The .xls is clean, I report.     

Hi, I have the same problem, word and excel.  on 2023-01-23 11:38:16: Aceptando SMTP conexión desde [23.83.212.46 : 36287] en el puerto 25 Mon 2023-01-23 11:38:17: El remit...

@Arron Sent you a sample as requested.