Error: “Unable to verify SMTP connection” when clicking Send Test at the Test E-mail window in Company Maintenance


Error: “Unable to verify SMTP connection” appears when clicking Send Test at the Test E-mail window in Company Maintenance for Sage 100


This issue may occur if the following conditions are met:

  • The Exchange Server in use is also running an SMTP service.
  • The user ID entered on the Company Maintenance E-mail tab has already been authenticated.


Note: There are numerous different server programs and providers that provide the services of an SMTP e-mail server. Sage does not test Sage 100 with all e-mail services/programs/providers.

Sage 100 Customer Support is not responsible for knowing the exact combination of program or provider, security or permission settings, inbound or outbound rules, account logins, passwords, bandwidth restrictions, etc. to enable successful e-mail delivery. The specifics of services, programs, and providers are subject to change. If an error is encountered, troubleshoot based on the Chilkat error log information. You may need to try various settings, or test an alternate service, program, or provider.
Possible Resolution:

  1. Open Library Master, Main menu, Company Maintenance
  2. Access the E-mail tab.
  3. Verify that the required information is correct.

Note: For more information, see the Related Resources section.


If necessary, seek the assistance of Acute Data Systems to help provide assistance with this process.