Incorrect authentication data

Hello,

We are using office365. Everything worked fine, but now emails are not sent. Error is Incorrect authentication data.
When we run the connectivity test we get the following results:

✅ Port 25 can be used for SMTP to smtp.office365.com. Warning: connected to hosting instead of office365.com.
✅ Port 587 can be used for SMTP to smtp.office365.com. Warning: connected to hosting instead of office365.com.
✅ 🔒 Port 443 can be used with the SendGrid API.
✅ 🔒 Port 443 can be used with the Mandrill API.
✅ 🔒 Port 443 can be used with the Mailgun API.
❌ No outbound route between this site and the Internet on Port 465.

• This topic was modified 4 years, 9 months ago by Bojan.