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Is your web server software compatible with SPF for sending and receiving email?
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Yes, it is fully compatible with SPF, or Sender Policy Framework as it is now called. Actually, it is fully compatible with SPF because this Anti-Spam solution occurs outside of the web server application software. What this means is that the web server application does not directly send mail messages itself, it forwards them to your local SMTP mail server for delivery. Therefore, the application has no direct affect at all on SPF or vice-versa. For your outbound messages, the only thing you need to do to support SPF is making sure the proper records for your domain name are defined in your DNS name server settings. If you are not familiar with managing your own DNS, you should contact your ISP or web host to make sure that they are supporting SPF by adding SPF records to your domain. This step allows your email recipients to verify that a message you send from your server, is indeed coming from your server and not an imposter. You can check your domain for SPF support using the SPF Tester available on the DNSstuff.com website. You just need to know your domain and the IP address of your outbound SMTP email server.
SPF is enforced for your incoming email by your incoming SMTP mail server or gateway. Current versions of SMTP server software like MailEnable, SurgeMail, MerakMailServer, and IMail (IPSwitch SMTP) provide support for SPF. Current versions of SMTP gateway software, like GFI Mail Essentials provide support for SPF filtering. To use SPF to filter out incoming Spam, you just need to enable the option in most software if it is not already enabled by default. See you SMTP server or gateway documentation for details on how to enable or configure SFP support.
In addition, SPF can be supported in Microsoft Exchange using the freeware version of GFI MailEssentials for Exchange. Also see the additional information link regarding using SPF with Microsoft Exchange.
If you would like to learn more about SPF, please visit the Open SPF site which contains a significant number of details on SPF and related online resources.
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