Denis poked fun at the increase in load caused due to the Spread Firefox campaign has been suffering from heavy traffic. I wonder if they'd do better if they subscribed to http://proxies.blackholes.wirehub.net/ as their mail blackhole provider? Seems to be limiting that nasty spread of e-mail that could otherwise bring a massive software distribution to its knees:
This is an automatically generated Delivery Status Notification
Delivery to the following recipient failed permanently:
Technical details of permanent failure:
PERM_FAILURE: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 Service unavailable; Client host [18.104.22.168] blocked using proxies.blackholes.wirehub.net (state 14).
To be fair, it's not always the case that relying on DNS BL is a good way of blocking mail; and also, it's not impossible for the GMail servers to be used for periodic spam, so it's not that much of a surprise to see it on there. However, I'm surprised that it's part of the Eclipse mail server configuration - this isn't the first time that mail has been rejected from GMail to eclipse.org. But perhaps if your company is using wirehub.net's DNS BL, you might want to think again, not the least of which seems to be that the wirehub.net domain is up for sale ...