Occasional Delivery Delays with SpamBlock
We have noticed that at peak times our spam blocking service is causing mail delivery delays. No mail is being lost, but there are some delays with the delivery of the mail to end-users. There appears to be a number of causes of this, and we have made some configuration changes which we think will help.
One of the problems is that take-up of the spam blocking service has been high, and the server is now handling approcximately 100,000 messages per day, of which a very large percentage is spam.
We have enabled recipient verification which will ease the load since a lot of messages can be rejected instantly (since they are not to a valid recipient), but this does mean that all domains using the service can no longer have a “catch-all” email account.
We will monitor delivery times on Monday as the mail load increases again, and if we still have delays then we will commission a new server to spread the load.
Sorry for the inconvenience with the occasional delays - we will get them sorted out. Overall though feedback has been fantastic - the service really does remove the vast majority of spam, with incredibly few false positives.
Duncan
August 19th, 2007 at 13:47
[...] Following on from a previous post about delays on the SpamBlock server, we have moved it to a new faster server to improve performance further. [...]