Talktalk failed to deliver two very important emails yesterday - thankfully the sender realised the problem and contacted me by other means.
I have just received a bounceback message for one that I sent - it stated.......
'The reason for the problem: 550 "Mail from lcpu.org.uk is denied from host 62.24.135.68 SPF"
62.24.135.68 or smtp-out-4.talktalk.net is an IP address owned by Opal Telecom, Irlam Core Network
There is a valid SPF record on lcpu.org.uk !!!!
When will somebody get this sorted out????????