I have a VPS running Plesk (v11.5.30), on which I have multiple domains. I've found that I am having problems with emails sent from this server being tagged as spam.
On running a test with
I get the following response:
We check if there is a mail server (A Record) behind your hostname localhost.localdomain. You may want to publish a DNS record (A type) for the hostname localhost.localdomain or use a different hostname in your mail software.
Looking through my settings in Plesk I realise that I have the full host name (Set in Server Management -> Tools & Settings -> General Settings -> Server Settings) set to localhost.localdomain
My question is what should I set this to if I have multiple domains and would resetting it now fix my problem or has this value just been copied to somewhere in the mail system config files?