Since it is timing out it would have to be either a DNS timeout (Increase the time in the printers DNS settings) or a firewall/spam filter
The problem is when you scan or forward fax to an e-mail more than 10 pages long, It ends with 027-773 error.
The file received in the e-mail is a corrupted pdf file !!! (BUG).
I tried to resove this issue with the support team and with no success.
I think Xerox support team and management should fix this issue - It is firmware issue,
or open a recall for all the B405 machines.
It is a real issue when you recieve a fax (the sender get acknowledge - OK,
and in the e-mail there is a corrupted file !!!) ==> the fax forwarding is USELESS !!!
my firmware version is 38.50.61.
Wait to hear from Support Team ASAP.
We have the same problem at Costa Rica, we have 3 machine B405 and all have the same problem.
In some case email was send buth in another printer indicate smtp server time out.