Between 19:20 & 20:45 we saw a DNS failure on ns01.r00.lon01.structuredcommunications.co.uk and ns02.r00.lon01.structuredcommunications.co.uk. This DNS failure lead to the failure of the SMTP service on EasyHTTP in that is was unable to lookup domains for email delivery. Emails where queued on the outbound SMTP connector and delivered once the issue was resolved at 20:41.
Looking at the logs prior to the above, its possible there may have been small period where this was intermittant resulting in Delivery delays.
The 2 listed name servers remain offline and DNS traffic has been diverted to ns01.r01.lon01.structuredcommunications.co.uk & ns02.r01.lon01.structuredcommunications.co.uk
We will advise when both the servers located in R00 are back in service.