Not receiving any ID verification emails from Microsoft for my outlook.com account

I'm trying to change my password (or any security settings for my outlook.com account), but the verification email I configured a long time ago (my comcast.net email address) is not receiving any of the verification codes sent that I need to proceed.  They are not being directed to the spam folder.  I'm not even sure they are making it your email servers, which would be odd, because that would mean you are blocking legit emails from the microsoft.com domain.  They use many subdomains for sending messages, possibly "account.microsoft.com", but I can't find any prior examples to be sure.  I'm not able to add my mobile phone as a password recovery device for outlook.com either, so I don't know how I'm supposed to verify who I am.  Please inform if any microsoft subdomains are being blocked from email delivery.

Thanks.