Server Status
Operational notices and maintenance history for J2 Holding's hosted services and infrastructure.
This page contains historical information about service interruptions, maintenance and infrastructure changes.
| Date | Note |
|---|---|
| 2025-03-17 | 17:16 – Bahnhof blocked outgoing TCP port 25 for the mail server. The server was therefore unable to deliver outgoing mail directly. Access to a relay server was provided and outgoing mail is now being routed through it. Service appears to be operating normally again. |
| 2025-03-15 | 15:54 – The mail server was unable to connect to some remote mail servers, preventing delivery of some outgoing mail. Troubleshooting was in progress and the problem appeared to be outside the J2 network. |
| 2024-12-12 | 08:00 – A large number of intrusion attempts against the mail server overloaded a logging function and caused very slow mail processing. The problem has been corrected and cleanup continued afterwards. |
| 2024-01-05 | 18:10 – Maintenance of the main UPS. A cooling fan required replacement. Systems without redundant power supplies were temporarily shut down during the work. |
| 2023-01-10 | 16:10 – A compromised user account on the mail server was used to send spam. The account password was changed, spam was removed from the mail queues and delisting procedures were initiated. |
| 2022-12-08 |
23:10 – Migration of the mail server
to a new host started. 00:10 – Migration completed and the mail server restarted. |
| 2022-12-02 |
15:23 – Power failure in the area. 16:20 – Backup generator started. 16:35 – Normal power restored. |
| 2022-10-31 |
01:00 – Upstream gateway lost ARP
information for several servers, preventing Internet
access to services including web and mail. 16:00 – Problem corrected. 20:00 – New DNS and web server put into operation. |
| 2021-12-02 | 08:00 – Planned web server update completed. |
| 2021-10-24 | 17:00 – Planned mail server update completed. Normal operation restored. |
| 2021-10-23 | 17:43 – Planned mail server update in progress. Mail service temporarily stopped. |
| 2021-10-19 | 00:01 – Mail service may have been unavailable due to an expired root certificate. Corrective work in progress. |
| 2021-06-16 | 10:16 – Services moved to the second production host during maintenance of the primary server. Synchronization continued afterwards. |
| 2021-05-06 | 09:20 – A server providing mail, DNS and mailing-list services had a failed hard drive. Replacement was in progress. |
| 2020-09-11 | 21:26 – Main servers relocated, serviced and returned to operation. Remaining infrastructure was moved the following day. |
| 2020-05-26 |
06:30 – Mail server shut down
following a hard-drive failure. 11:05 – Problem corrected and server returned to service. |
| 2020-02-15 |
21:34–21:50 – Power failure caused
loss of WAN connectivity. Servers were placed in a
reduced-power state in preparation for a longer
outage. 07:10 – WAN connectivity restored and servers returned to normal operation. |
| 2019-05-23 | 04:30 – Mail, revision-control and mailing-list servers temporarily shut down because of thunderstorms. |
| 2019-05-11 | 18:00 – Mail server restarted. |
| 2019-05-10 | 18:55 – Mail server shut down for maintenance. |
| 2019-01-26 | 15:37 – Scheduled server maintenance in progress. Some services could be slow or temporarily unavailable. |
| 2018-12-26 | 17:15 – Performance problem on the primary mail and DNS server corrected. |
| 2018-12-25 | 18:00 – Primary server operating slowly. Mail delivery affected. |
| 2018-12-07 | 20:27 – Mail-server TLS certificate updated. Let's Encrypt introduced as certificate provider. |
| 2018-10-16 | 08:20 – Mail-server certificate updated and server restarted. |
| 2018-05-30 | 07:30 – Mail-server problem. Server restarted. |
| 2018-05-14 – 2018-05-16 | Major upstream fibre/network fault affecting outgoing traffic. Incoming bandwidth remained normal while outgoing bandwidth fell to well below 1 Mbit/s. The fault was traced to the upstream network and eventually corrected by the network provider. |
| 2018-04-19 |
07:17 – Mail server failed to start
after certificate renewal. 07:34 – Certificate problem corrected. |
| 2018-01-27 | Regional Internet outage affected mail, web and SVN services. The problem was eventually corrected by the fibre/network provider. |
| 2017-03-06 – 2017-03-07 | Primary and backup server problems following an extended power failure. Servers were repaired, synchronized and normal services restored. |
| 2016-10-06 – 2016-10-07 | Web server moved to the production host. An upstream network switch initially blocked access; service was restored the following day. |
| 2016-07-29 | UPS and hard-drive failure on a production host. DNS and SVN services were started on a backup server. |
| 2016-07-28 | 15:43 – Mail server unavailable. Troubleshooting in progress. |
| 2016-07-01 | 13:30 – Mail-server certificate replaced. |
| 2016-06-27 |
11:10 – Production server for mail,
revision control and web services unavailable. 16:00 – Problem corrected. |
| 2016-04-07 | Production server extremely slow or unavailable. Possible denial-of-service activity investigated. Service was temporarily restored and the affected server scheduled for replacement. |
| 2016-02-08 | Network outage in Linköping temporarily made the server infrastructure unreachable. Service was restored later the same day. |
| 2016-02-04 | Mail server experienced severe performance problems. Service returned after restart and logs were analysed for the cause. |
| 2016-01-07 | Connectivity outage affecting the server infrastructure. Service restored after the upstream network problem was corrected. |
| 2015-11-12 | Mail was received by the server but was not being delivered to user mailboxes. The problem was corrected later the same day. |
| 2015-10-23 – 2015-10-26 | Migration from the old mail server to a new Zimbra server. Mail servers were synchronized and DNS/MX records updated. |
| 2013-08-09 | Production server overloaded or faulty, affecting mail, websites and document services. Problem corrected later the same day. |
| 2012-12-16 | Network connection fault affecting the primary server. Problem corrected. |
| 2012-11-29 | Upstream network disturbance affected mail, web, revision control, DNS, downloads and backup services. Service restored after troubleshooting. |
| 2011-07-03 – 2011-07-14 | Mail server affected by earlier thunderstorms. Service initially operated at reduced performance before the fault was located and corrected by the upstream provider. |
| 2011-04-17 | Electrical-grid fault affected a production server and DNS service. Normal operation restored. |
| 2011-04-14 | 02:00–04:30 – Planned broadband interruption for upstream network maintenance. |
| 2011-01-30 | DNS server migration completed. Customers using external registrars were requested to update their DNS delegation. |
| 2010-09-06 | Upstream area-switch failure in Mjärdevi. Problem corrected by the network provider. |
| 2010-07-08 – 2010-07-09 | Internet connectivity problem affecting both server facilities. The fault was traced to an upstream area switch and corrected. |
| 2010-06-07 – 2010-06-10 | Connectivity problems at the Collegium server room affected mail, SVN and web hosting. Services were temporarily moved to a slower connection while the upstream fault was investigated and repaired. |
| 2010-04-19 | Mail-service problems following software updates to OpenSSL and stunnel were corrected. |
| 2010-04-14 | A UPS short-circuited and stopped a production server for approximately 30 minutes. Service was restored. |
| 2010-03-31 | Problems discovered during UPS maintenance prevented two servers from restarting. The production server and backup server were subsequently returned to operation. |