I’ve finally got the trial Postini service configured after some fun and games with my MX Record settings, all my fault I’m afraid! Anyway, mail flow is now through the Postini mailservers and one of their claims is that there is no significant delay for valid messages which seems to be the case. The service is managed by a company called Gradian and the support guys have been very good and helpful and ensured everything is up and running with me. The Postini Portal is well laid out and easy to navigate around, although I’m running with the default settings at the moment. So incoming mail is checked against a Blackhole Spam List and scanned for viruses. Outgoing mail can be sent through Postini, although currently it just goes to my ISP’s SMTP server. So far so good in the battle against Spam. If all goes well then I’ll be offering this as a service to clients.