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domain specific settings in master.cf

BobClaas

Basic Pleskian
I've been working on the mail server for quiet some time now to fix mails going to hotmail spam.

During changes i've noticed that a few domains now have a specific setting in master.cf
plesk-domain.nl-IPv4adres-IPvs6-adres unix - n n - - smtp -o smtp_bind_address=IPv4adres -o smtp_bind_address6=Pvs6-adres -o smtp_address_preference=ipv4 -o smtp_helo_name=domain.nl

I think this sets the helo to the specific domain that sends the mail, which is as far as i know good to have for a some mailproviders. But im not sure. Is this correct?
And if so, how do u invoke this setting for the other domains to be added to master.cf?
 
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