Hello,
There is a bug with the Reminder feature of an event in docker deployment of version 3.3.6.
when the user add reminder for an event, he does not receive the emails, While other emails function like registering an user in an event or creating an account are working, and the user can receive email notifications. But not the reminder ones!!
We investigated this problem in the indico logs and we found this:
Indicating: A message can’t be sent, since it contains no recipients, and there is an InvalidRecipientException.
Thank you for your feedback 
Check the settings of the reminder. What did you enter for the recipients?
In any case, the error is weird. Because reminders are sent individually to each recipient, so sending one without any recipients should never happen… and in fact, there is a check to skip anything related to sending reminders if the list of recipients is empty.
Can you check the corresponding entry in the Log view of the event? I’d expect a red mail icon next to it since sending it failed. Check what To address is used there.
PS: You need to update to v3.3.7 which among other improvements contains a security fix.
Hello, Thanks for your answer,
We have investigaed the logs and we observed this, there is no red mail icon as you said and it is written that the email is going to be sent! This bug persist on v 3.3.6 and v3.3.7.
Thanks again for your feedback:)
In that case it must be an issue on your side. The email was successfully passed on to the mail server (otherwise the icon would be red), and then the mail server did not send it for whatever reason.
Can you show the details of the reminder and its log entry (privately if needed) to see if there’s maybe something wrong with the email addresses there?
Hello,
Here you can find the details of the reminder,
what do you mean by log entry? where i have to find it?
Moreover we have noticed that the email icons became red since yesterday that we did the test.
Here are the red email icons:
Sorry, but I need to see the recipient address to see if something in there looks invalid… Because I don’t see any way Indico would actually send these emails without / with an empty To…
How i can send you private message?
Click on my name/avatar and then “Message”
I searched everywhere but didnt find message option, maybe i can not send you messages,
Do you see it now? Maybe there were some very-new-user restrictions being applied
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hm ok, the email address looks perfectly normal. no idea why it’s failing for you…
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