Re: [For server admins] Emails do not arrive due to issue r
Posted: Mon Mar 30, 2020 6:10 pm
Since @wustl.edu has the same lookup situation as email.wustl.edu, I'm assuming that the MX records for @wustl.edu which point back to wustl.edu addresses is the reason or part of the reason why those work for getting passkeys. Email.wustl.edu MX points back to mail.protection.outlook.com since it's used for Office 365. I'm curious why there isn't sufficient info there to identify it as a legitimate address to use.jcoffland wrote:The IP address 128.252.160.5 does not have a reverse DNS entry for email.wustl.edu. This is part of how the email system validates that the connecting server is legit.
I'm curious if others may be in the same board where certain email domains are simply being blocked? We're working through the process on our side to get aliases created but there are hoops we have to jump through.