Failure sending Email

Hi guys
I have noticed that Auth0 has stopped sending emails like verification, password reset etc.

I have a custom SMTP setup, I have tested the SMTP connection details in isolation and it works fine.

Here is one of the rececnt logs i got from my dashboard, and the error is not clear enough

LogId: 90020191209103041761000555376278838183147789138563956754

Log Json
“date”: “2019-12-09T10:30:40.593Z”,
“type”: “fn”,
“description”: “To: XXXXXX”,
“connection”: “Username-Password-Authentication”,
“connection_id”: “”,
“client_id”: “QJW66b7Mj_JcjFWEKnSR2_dp9c2p7E4J”,
“details”: {
“email_type”: “welcome_email”,
“to”: “XXXXXXX”,
“error”: “140222617368448:error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol:…/deps/openssl/openssl/ssl/statem/statem_lib.c:1929:\n”
“log_id”: “90020191209103041761000555376278838183147789138563956754”,
“_id”: “90020191209103041761000555376278838183147789138563956754”,
“isMobile”: false,
“user_agent”: “Other 0.0.0 / Other 0.0.0”

Hi @huzefa.yousuf,

This error seems related to the email server ssl protocol.

Did you recently upgrade? I am looking at this SO topic as a reference:

Hi @dan.woda

We have used this SMTP server with Auth0 from inception. The emails worked till about Saturday and then stopped working all of a sudden. The SMTP server is managed and provided by our hosting provider, Im using the same configuration in my application and is working fine.

Were there any changes on Auth0 side that could trigger this ?

I have not been able to find any breaking changes or other users that are experiencing this issue.

When did this behavior start?

It was working till last saturday

What can we do to recitfy this


It looks like this was an incident. Thanks for bringing it to our attention, the issue has been resolved.

Please let me know if you experience any related problems.


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