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Solution:

• NOTIFICATION_URLS=smtp://prefix%5Cusername%40example.com:PassWd@hostname:port/?auth=None&encryption=None&fromAddress=[email protected]&starttls=No&toAddresses=[email protected]

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Your configuration as is looks correct and I'm using email notifications in the very same manner myself, so it's probably about that URL itself.

I could not do any troubleshooting cause there is no outputs to the console about emails from the container .

In case sending the email returns an error you should see a message like this in your log output:

Backup procedure ran successfully, but an error ocurred calling the registered hooks: ...

In case this is not present it means that the email client is able to send out the notification, but it's likely not being sent to the correct address.

I'm not entirely sure about the meaning of that double backslash in your email. Could you maybe try using this tool containrrr/shoutrrr#103 (comment) to encode the URL and see if it produces the same result?

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Thanks for the quick response!
i will try that

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Actually, this param: BACKUP_PRUNING_LEEWAY=5m, block me of viewing the error log (i didn't wait 5 min ), error msg shows after 5min of sleep :-)

I got this error without touching the previous setup, then i replace all @ signs with %40 in username, fromAddress and toAddress, did not replace @ prefix to the hostname. Also in username i have a prefix to a username in form of a backslash () which replaced with %5C.

- NOTIFICATION_URLS=smtp://prefix%5Cusername%40example.com:PassWd@hostname:port/[email protected]&[email protected]

Every try resulted with same error >

level=error msg="Backup procedure ran successfully, but an error occurred calling the registered hooks: runHooks: error running hook: notifySuccess: error notifying: sendNotification: error sending message: error enabling StartTLS: x509: cannot validate certificate for *myhostname* because it doesn't contain any IP SANs"

Is TLS/SSL security necessary?

I'm already sending emails from Spring Boot to that server with just following setup (no SSL/TLS, just simple smtp auth)
spring.mail.host=hostIpAddress
spring.mail.port=25
spring.mail.username=prefix\[email protected]
spring.mail.password=PaSswD
spring.mail.properties.mail.smtp.auth=true

Thanks!!

from docker-volume-backup.

Reading this: https://containrrr.dev/shoutrrr/v0.5/services/email/ I think passing useStartTLS=no might work for you but I'm not sure about other options that need to be set. In any case you should be able to get the setup you need using the parameters described in the shoutrrr documentation.

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Finally!
got thiis working, here [(https://containrrr.dev/shoutrrr/v0.5/services/email/)] they said the key is: useStartTLS, but it is actually a StartTLS in lowercase. beside that i added two more : auth=None&encryption=None
And it is working!
Thank you very much for the assistance !!

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