Wrong sendgrid account used

[bwalger]

i configured two sendgrid API keys for two domains. I bounded them to the correct domains, but sending is not possible:

Error in Admin: host smtp.sendgrid.net[54.228.39.88] said: 550 Unauthenticated senders not allowed (in reply to MAIL FROM command)

Error in Postfix Log:

warning: /etc/postfix/conf/sasl_passwd.db: duplicate entry: "[smtp.sendgrid.net]:587" warning: duplicate master.cf entry for service "smtp_SendGrid" (private/smtp_SendGrid)

I tested sendgrid keys in a local bashscript and they are working.

It seems that Billionmail is picking the wrong sendgrid API and it bounces because of wrong MAIL FROM command.