Postfix/main.cf/smtp sasl auth enable
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- parameter: smtp_sasl_auth_enable
- default: unknown
- versions: unknown
- values: no|yes
- purpose: enables authentication from local SMTP client to external SMTP relay server
About
This parameter must be set to yes in order to for the Postfix SMTP client to authenticate with an external SMTP server (as specified in relayhost) to relay messages.
If it is set to no, it essentially disables the smtp_sasl_password_maps parameter.