If you are having issues with the default invoice expert email server and seeing the error message:
Unable to send email, because the following error has occurred:
Transaction failed. The server response was: 5.7.1 <unknown[18.104.22.168]>: Client host rejected: Access denied
Please follow these steps to manually update your Invoice Expert and fix email issue. Or you can wait until we release the next version of Invoice Expert.
- Download and run the email fix setup: https://www.invoiceexpert.com/InvoiceExpert-4.44.0-email-fix.exe
- Click yes to run the setup:
- Now run Invoice Expert as you normally would. If you see the following message click "More Info" and "Run anyway". This should only happen the first time after downloading.
- After Invoice Expert opens, test out the email sending. Go to Settings -> Email Setting -> select "Use invoice expert email server" and then click "Send Test Email". Everything should work now.