Home / server / Questions / 613743
Accepted
CaptSaltyJack
Asked: 2014-07-19 11:13:40 +0800 CST

How does postgrey handle changing FQDNs?

  • 772

Let's say I receive emails from the following clients:

mail2.dx300.mail.net mail4.dx121.mail.net mail5.dx121.mail.net

Even though these are all from the same service (e.g. LinkedIn or MailChimp), postgrey sees them as entirely different clients. How can I configure postgrey to just look at the domain (mail.net), not the FQDN?

greylisting

1 Answers

  1. Best Answer

    The reason Postgrey sees them as different clients is simply because they are. Each is a Different server with a unique ip-address and hostname.

    Unless you add them to a whitelist first they each have to prove they behave like a proper smtp daemon.

    But if they all are trusted clients you do not have to individually add them to the whitelist, you have the following options:

    # Whitelist the whole domain
example.com
mail.net

# Use Regular Expressions 
/^mail[0-9].dx[0-9]{3}.mail.net$/

# Use CIDR IP Addresses:
10.9.8.0/24
    • 3