#Microsoft #Outlook #email #fail - Why #from #address is assigned like this at times? outlook_0000000000000000@outlook.com (the number has been changed to all zeroes, preserving length)? When this happens, it also means that any possible #bounces won't get through because the #sender address is already #invalid. This is very easy to fix. Either the from address is set correctly or you'll simply add that from address to my #alias table, so bounce routing works. - Thank you!