[GitHub] [airflow] potiuk commented on issue #15133: EmailOperator / email on failure fails with smtp in airflow 2.0.1

[GitBox <gi...@apache.org>]

potiuk commented on issue #15133:
URL: https://github.com/apache/airflow/issues/15133#issuecomment-886578300


   > FWIW I believe I also ran into this issue with the `postgresql` password. I had special characters (`%`, `&`, `+`) in it and airflow was not able to use the connection string. Changing to an alphanumeric password fixed the problem.
   
   @henryzhangsta  This is a different issue with Postgres connection URL. When you embed your password in URL, you MUST Percent-encode it (see https://datatracker.ietf.org/doc/html/rfc3986). This is part of specification and this has nothing to do with Airflow. 
   
   See: https://airflow.apache.org/docs/apache-airflow/stable/howto/connection.html#handling-of-special-characters-in-connection-params
   
   We even have a tool in Airlfow to allow you to generate connection URI with proper, URI-standard compliant encoding in Airflow to make it easier:
   
   https://airflow.apache.org/docs/apache-airflow/stable/howto/connection.html#generating-a-connection-uri
   
   So you can still use even the "restricted" characters as long as you properly encode them.


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