VPN Encryption TLS Update

On Friday, October 24th at 11am PST we will be upgrading our VPN cluster to modify the minumum supported TLS encryption version from 1.1 to 1.2.  Our analysis shows that we do not have any active users connecting with TLS 1.1, however we still wanted to provide this notice for your information. Thank you for your understanding, and thanks for choosing Sonic!

– System Operations team

Intermittent IMAP login issue.

Routine maintenance this evening caused unexpected load on some of our IMAP/POP mail servers that lasted from 11:15pm to 12:12am. During this time some users may have experienced intermittent problems logging in. The situation is believed to be resolved; our operations team will be reviewing the incident to reduce the impact of the same maintenance in the future.

-SOC

Systems Maintenance

Update: Maintenance complete

Beginning at 11pm tonight (10/7/2025), System Operations will be performing updates to various public-facing systems which may lead to short disruptions of those systems.

Maintenance work for each system is expected to be very brief, and the overall maintenance period is scheduled for one hour. An update will be sent upon completion.

Technical Support and Billing availability update for 10/03/2025

We are taking a short break to celebrate our hardworking teams:

Sonic Technical Support will be closed from 11AM to 4PM PST on 10/3/25.
Sonic Billing Team will be closed starting at 11AM on 10/3/25 and reopening on Saturday, 10/4/25 at 8AM.

Give us a call today if you need any assistance in advance!

Thank you for understanding.

IMAP issue – Friday 08/08/2025

Last Friday (08/08/2025), from 11:14pm to 11:42pm PDT, our mail infrastructure had issues with serving requests to imap. The result would be seen as a failure to use imap (such as logging in or retrieving emails) during that time. Delivery of emails were unaffected. Although this MOTD is belated, it is the intent of our team to announce issues close to when they are noticed. At this time, email service should be stable.

4th of July Holiday Hours

Sonic Technical Support will close early at 5 PM on Friday, July 4th. We will return to our regular 8 AM to 10 PM operating hours on Saturday, July 5th.

Our Network Operations team will remain available with reduced staffing for our enterprise, dedicated circuit and colocated customers.

The Billing and Consumer Sales teams will be closed on Friday, July 4th for the holiday and will return to normal operating hours on Saturday, July 5th.

Recursive DNS Issues

We’ve been working on several improvements to our recursive DNS cluster configs to improve performance across the board and better support network growth in new regions beyond our existing service foot print in Northern and Southern California and have rolled out several config changes to the DNS proxies that handle ns1 and ns2.sonic.net over the past week.  What we believed was to be the last of those changes was pushed out this afternoon to the entire fleet after having cooked properly on a few systems at 3:15PM.  After that change was pushed, a significant portion of IPv6 DNS requests appeared to be black holed by some of the servers.  The issues continued until about 3:46PM. We are still unclear on the root cause of this but all services are currently stabilized and running as expected at this time.  We will continue to investigate in the hope that we can identify the cause, it seems possible it could be a bug in the dns specific load balancing software itself.

It is worth noting that our expectation was that most clients would have both v6 and v4 servers configured but it is evident that is not the case and it is likely that the majority of v6 enabled clients on our network with no fail over to v4 requests.  If you have static configured name servers, we’d suggest you list both the v6 and v4 address listed below.

2001:5a8::11
2001:5a8::33
50.0.1.1
50.0.2.2

-Kelsey, William and the rest of Systems.

Email and Login Issues for June 9th

UPDATE: Login and Email issues should now be fixed. If you are still experiencing issues accessing services on your Sonic account, please reach our to our Customer Support group:

A small subset of customers may be experiencing issues with accessing Email, Member Tools, and other services which require logins. The Operations team is investigating the issue and working quickly to restore regular service. This should not impact connectivity services.

VPN Maintenance

Update: This maintenance is complete.

This maintenance has been rescheduled for Thursday, June 6th at 10PM PST.

On Thursday May 29th, beginning at 10pm PST we will be upgrading components of our customer VPN infrastructure.  In order to facilitate these upgrades there will be a small window of downtime for the service.  It is estimated that the window for this operation should span no longer that 30 minutes, and during that time the service availability may fluctuate.  Thank you for your understanding and support – Sonic System Operations