Invitation email not being received

[Desiree Olivito]

Starting last week, the new users I am inviting to the allerganbt.atlassian.net Jira instance are not getting the email invites.  The previous week there was no issues.  I sent an email to a user with a yahoo email address last week and the invite was received.

The users checked their spam folder and there were no emails from Atlassian.  I had the users go directly to id.atlassian.com to register (not ideal) and they have since received email notifications - so it seems to be specific to the invite emails.

We are just rolling our Jira to the organization and I need to invite several hundred users in the next few weeks - so I really need to get this working asap.

Appreciate any help.