Email service for SRT customers has been down since Wednesday due to a ransomware attack on its third-party email server Mail2World, the company said Friday.

SRT says the email providers had initially thought it an internal, short-term outage when thousands of SRT customers could not receive or send emails Wednesday morning.

The email host is now working with federal authorities to reclaim the server.

CEO of SRT Cassidy Hjelmstad says there is no indication customer information was compromised.

“They have assured us that our customer’s email data is safe and we do believe them for that. We have no reason not to but they haven’t been able to restore service yet,” she said.

Hjelmstad apologized for the outage and asked people to be patient while Mail2World restores email services.

There’s no estimate yet on when email service will be back online.

“We don’t have an estimated time yet and they’ve been working around the clock. They’ve tried to keep us informed but again is a matter of how soon they can get things restored. We want to make this right by them and when it’s a third party that’s the hardest part because you’re not in control but at the same time they are not in control either, the hackers are,” Hjelmstad said.

SRT Communications, based in Minot, serves over 40,000 customers.