More mail settings changes

Hi,

Yesterday, I've changed the settings on the server to stop doing sender/callout: verification of existence of the mail address of the sender; although it's considered abuse (of the server of the owner of the verified domain), it's been a very effective method of keeping spam in check in the past. However, it seems to keep out some DMARC reports as well.

At the same time, I've changed the mail processing parameters: SPF is now checked earlier in the mail transaction and instead of calling out to an external application, it's processed by Exim's SPF capability internally.

This mail is both a heads-up as well as a test mail to see if mail still comes through.

Regards,