Our current e-mail relays, polonium and lead, need to be replaced:
- They are both in eqiad, something that was always meant to be temporary (at the time they were provisioned codfw was not in production)
- They need to be convered into jessie
- They need to be moved into VMs
- (Optional) They need to get cluster-based hostnames as we'll need to issue certificates for them
The systems are well-puppetized, so It should be relatively simple. The only tricky part is handling the migration, as polonium/lead's IP addresses are hardcoded e.g. in the Google for Apps panel OIT is handling.