Notice of Microsoft 365 Service Outage
Microsoft Exchange Online is experiencing a service outage that is causing delays in email delivery to and from dpiusa.com. This issue is affecting Microsoft Outlook customers globally and may impact your ability to send and receive emails to/from our organization.
Microsoft is working to resolve the issue. We will continue to monitor the situation and provide updates.
In the meantime, DPI’s web services and online request systems are fully operational.
- Please submit filing requests through our member portal at https://members.dpiusa.com.
- Please be reminded that publication confirmation reports for tariff filings are accessible via our Members Menu. These reports are uploaded at about 6:00 PM (PST) every business day. To view reports for your tariff, log in to our site and select Confirmation Report from the Members Menu.
- For urgent issues, please contact us by phone at 1-510-273-8933.
We understand the importance of timely and reliable communication and apologize for any inconvenience this disruption may have caused.
2026 Holiday Schedule
Please be advised, DPI will observe the following holidays in 2026:
| New Year’s Day | Thursday | 01Jan2026 |
| Martin Luther King Day | Monday | 19Jan2026 |
| Presidents Day | Monday | 16Feb2026 |
| Memorial Day | Monday | 25May2026 |
| Independence Day | Friday | 03Jul2026 |
| Labor Day | Monday | 07Sep2026 |
| Thanksgiving Day | Thursday | 26Nov2026 |
| Day after Thanksgiving | Friday | 27Nov2026 |
| Christmas Day | Friday | 25Dec2026 |
Our web servers at www.dpiusa.com and email servers will be in full operation during these days. Tariff filing requests received on these days will be processed on the next business day and confirmed the following business day; thank-you for your cooperation.



