Description:

See below.

Server Setup Information:

• Version of Rocket.Chat Server: 0.63.0
• Operating System: Ubuntu 16.04 LTS
• Deployment Method(snap/docker/tar/etc): docker
• Number of Running Instances: 1
• DB Replicaset Oplog: Disabled
• Node Version: 8.11.1
• mongoDB Version: Whatever's in the docker image

Steps to Reproduce:

1. Be offline or away in a channel.
2. Wait for somebody to ping @all in said channel
3. Wait for an email notification that never arrives.

Expected behavior:

We expect all users in a channel who have email notifications configured, to receive said notifications when they are offline or away and somebody mentions @all in the channel.

Actual behavior:

Some users don't receive said emails, and haven't done since we upgraded to 0.60.1.
All users do receive email notifications for DMs and personal (not all) @mentions.

I don't know how to debug this, but if you tell me where to poke around in Mongo, I can find more information. Also, email sending doesn't appear to be in email logs, which makes things difficult to debug.

Relevant logs:

If anyone from the RC team works on this (and we hope somebody will), ping me and I'll put the logs somewhere suitable, or better still, you're welcome to SSH in.

Cc @schurder @ShazzaPM