Event ID - 577

Event Id577
DescriptionRouting has reported the domain %1 as unreachable. The error is %2.
Event InformationCAUSE:
Routing cannot find a functioning next-hop.

At some point of time in the past Exchange failed to deliver to the next-hop and routing marked the link as currently-unreachable. Look for other events in the log indicating problems delivering in the past. If the problem persists, restart the SMTP Virtual Server and note which queue goes to retry. Highlight the queue and note the reason specified.
Reference LinksMicrosoft product: Exchange Version: 6.5.0000.0 Event Source: MSExchangeActiveSyncNotify Event ID: 577

Catch threats immediately

We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.

See what we caught

Did this information help you to resolve the problem?

Yes: My problem was resolved.
No: The information was not helpful / Partially helpful.