Overview
Attempting to send an outbound fax through email can sometimes fail with a Voice Answer error sent through email notification to the sender as shown below:
Solution
According to FaxMaker Online Error String Explanations, the Voice Answer error indicates an issue on the recipient's end when either a person or voicemail message answered the call.
You can troubleshoot the issue by dialing the number from a phone and listening for a fax tone.
If a fax tone is heard, you can try to resend the fax, otherwise you should contact the recipient to confirm if the fax number is valid and currently functional.
If the error persists despite the recipient confirming the number as functional, submit a support request for further analysis to establish the root cause.
Testing
Send a fax from your email and confirm that the outbound fax was successfully transmitted without errors.