Good morning I work for Ashfield District Council, for the last couple of days emails sent from ashfield.gov.uk or ashfield-dc.gov.uk are being rejected as spam by Plusnet with the message 552 Spam Message Rejected.
(This has happened in the past and was investigated by Bob Pullen.).
Our email is sent via Mimecast. The IP address is 188.8.131.52. Could you advise how to rectify this please?