Grid Hosting maintenance

We will be performing a maintenance of our email infrastructure for Grid Hosting plans. This maintenance involves a few components, including upgrading the mail software to a new major version, along with an IP change of the underlying infrastructure.

As a result of this, we will be temporarily take the email services offline. All inbound email will be queued by our inbound spamfilter servers, and be delivered once the system is back online. Outbound email will fail during the duration of the downtime, since the authentication service will be offline.

We plan to start the work at around 10pm Amsterdam timezone on Wednesday. While we expect the downtime to only be roughly 5 minutes, we do allow a slightly longer window of downtime.

Depending on some additional testing we're performing, we may have to postpone it by 24 or 48 hours. But the maintenance involves security fixes, so we'd like to get them done as soon as possible.

Update 21:50: We'll begin at 22:00.

Update 22:03: We're starting with taking the authentication and mail system offline.

Update 22:06: The traffic has been redirected

Update 22:11: The system has been updated to receive traffic again

Update 22.13: The SSL certificates has been reissued

Update 22:19: A quota permission issue has been resolved, that resulted in mail-accounts not updating quota

Update 22:29: Final checks are being performed as we speak, and a change for hosting-panel.net are being rolled out to support the changes we've done

Update 22:42: A final issue were spotted, which resulted in an invalid certificate being expired, which prevented most mail-clients from logging in without showing a certificate warning.

Update 22:58: Based on logs, everything seems to be functioning as it should.

SMTP services were down for 5 minutes and 19 seconds
IMAP services were down for 7 minutes and 23 seconds
Dovecot authentication were down for 7 minutes and 23 seconds (Same as IMAP services)
Postfix authentication were down for 35 minutes and 6 seconds due to the reissued certificates were not correctly loaded into postfix due to wrong map type

Maintenance concluded.