an error occurred while sending mail in a specfic rds server

Hi @דניאל36324944nk78,

Hope you are doing well. Sorry for the trouble, and the delayed response.

In case you are still looking for a solution, you can try these steps or save them as reference:

1. Check Windows, Acrobat, and Outlook Versions

• Log in to both RDS servers and note the following:
  • Windows Version: Type winver in the search bar and compare.
  • Acrobat Version: Open Acrobat, go to Help > About Adobe Acrobat, and compare versions.
  • Outlook Version: Open Outlook, go to File > Office Account > About Outlook, and compare build numbers.
• Ensure that all are consistent between RDS-01 and RDS-02. If there's a mismatch, update the software on RDS-02 to match RDS-01.

2. Compare Registry Entries for MAPI Support

• MAPI (Messaging Application Programming Interface) is required for Acrobat to interact with Outlook. Check these registry keys to ensure proper configuration:

Key Locations:

• HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail
• HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Clients\Mail (for 64-bit systems with 32-bit Outlook)

Steps:

• Open the Registry Editor:
  • Press Win + R, type regedit, and press Enter.
• Navigate to the keys above on both RDS servers.
• Compare the following values:
  • (Default): Should be set to Microsoft Outlook.
  • Path: Should point to the Outlook executable. Example: C:\Program Files\Microsoft Office\root\OfficeXX\OUTLOOK.EXE (XX represents the Office version).

If There's a Difference:

• Update the incorrect registry entries on RDS-02 to match RDS-01.
• Restart the server or relaunch Acrobat and Outlook for changes to take effect.

Re-enable MAPI (if needed)

• Run a command to re-register MAPI DLLs:
  • Open Command Prompt as Administrator.
  • Type the following and press Enter:

    regsvr32 %systemroot%\system32\mapi32.dll
    

• Restart the server and retest.