ajos1

- I wonder if BT use backscatterer as part of it spam checking and this is the main issue. - - - - Mail that went through EUR01-HE1-obe.outbound.protection.outlook.com 104.47.0.123 gets to BT. - - - - Mail that uses EUR02-HE1-obe.outbound.protection.outlook.com 40.107.1.114 does NOT get to BT. I used Email Header Analyzer, RFC822 Parser - MxToolbox on one of the weekends rejected messages and it suggests EUR02-HE1 is on a blacklist. Reason for listing - Sorry 40.107.1.114 is blacklisted at Backscatterer.org powered by UCEPROTECT Blacklist started 02nd Nov and ends in 4 weeks time. - - - -