I was wondering if anyone has had any confirmed issues with notifications being blocked by a firewall or spam filter on the user's side? I have a case where a user is not getting any email notifications from Canvas and I was curious if others have had this issue? This would be specific to her ISP which is also her email provider. I know we as an institution have a whitelist of IP addresses from Instructure and recently they sent out another whitelist batch for notification servers, it may just be me but, I do not recall any of the IPs being specific for notifications in the past.
Have you had issues before like this where you have either had to get Instructure servers whitelisted with ISPs or email providers? It seems a tall order for one organization acting on the behalf of the user, to request to various other organizations to add whitelist exceptions, which is really suspicious behavior to a sys admin or secturity admin.
We have had an issue with one specific user who used her Comcast account as her official email at the institution. This was one of these long lasting holdover situations where the user did not want an institution email account. Once we spun up Canvas she was not receiving notifications. After much pressing, we were able to get her to agree to using our local Exchange service and has been fine ever since. We were clear to her that we can only support our services and that something on the Comcast end of her service was blocking the notifications.
So yes, we've encountered a similar situation...
We are giving the Canvas Admins area a little bit of love (especially questions that are really, really old) and just want to check in with you. This will also bring this question new attention.
Were you able to find an answer to your question? I am going to go ahead and mark this question as answered because there hasn't been any more activity in a while so I assume that you have the information that you need. If you still have a question about this or if you have information that you would like to share with the community, by all means, please do come back and leave a comment. Also, if this question has been answered by one of the previous replies, please feel free to mark that answer as correct.