Neil, Also, if you could clarify the below questions for us?
1. Could you provide us with the original/sample doc that you are trying to send as faxes
2. Do you have the same problem for all recipients? or for some numbers?
Neil, we are investigating your case now. Can you please clarify how you detected this delay? Is it a time when the fax was actually received by recipient or the time you got confirmation by email? According to our logs it took ~17 minutes to send fax from our servers.