Spam overload

No doubt you have noticed the massive increase in spam coming in lately and all the current anti-spam technology doesn't seem to be able to do much about it.  I've actually killed off my primary personal email address because it was getting over 300 spam messages/day - ridiculous and you'd reckon the idiot spammers would realise that too much is a bad thing.  Anyway, a new service has been installed on the server and I will be implementing a test of it this weekend.

Greylisting will inspect every email that comes in and hold it until the sending server retries.  When the retry occurs and it matches the initial information it will then validate the sender and allow the emails through.  This can cause a delay in receipt of mail though as the retry period for the mail is dependent on the sending server and can be as quick as a few minutes or up to 4 hours.  It may be that this is unworkable but I won't know until I try it.  If I start getting complaints I will just disable the service and we get spam back.