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Postfix Mandrill relay issue

Thomas Root

New Pleskian
Dear Odin Support Community,

All of our datacenter's ip address has been blacklisted, so we had no other choice then to use Mandrill as a relay for outgoing emails from Plesk.

We have used the following settings:
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_use_tls = yes
relayhost = [smtp.mandrillapp.com]

These settings are working just fine and all of our emails are going through Mandrill.
However we have a few accounts that has domain aliases.
Basically we have addresses like these: [email protected], [email protected] and these addresses are forwarded to a Gmail address. Each time the client receives an incoming email he receives it two times for some reason.

Do you happen to know how to fix it?
 
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