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Deployment Values
For each deployment, you need to set the environment variables and configurations. Here is some specific information on how to set the values.
E-Mails
You need to set environment variables to send registration and invitation information or notifications to users, for example.
SPF and DKIM
More and more e-mail providers require settings for authorization and verification of e-mail senders.
SPF
Sometimes it is enough to create an SPF record in your DNS.
DKIM
However, if you need DKIM authorization and verification, you must set the appropriate environment variables:
SMTP_DKIM_DOMAINNAME=<your e-mail sender domain>
SMTP_DKIM_KEYSELECTOR=2017
SMTP_DKIM_PRIVATKEY="-----BEGIN RSA PRIVATE KEY-----\n<your base64 encoded privat key data>\n-----END RSA PRIVATE KEY-----\n"
You can find out how DKIM works here:
https://www.ionos.com/digitalguide/e-mail/e-mail-security/dkim-domainkeys/
To create the private and public DKIM key, see here:
Information about the required PEM format can be found here: