Am 03.05.2016 um 23:26 schrieb A. Schulze: > if I shorten the user part to "09b11616-bbfe2cf4-54a7-43da-9ddf-cf27d995d89a at mg.expediamail.com" > I get a spf + dmarc pass the string above is exactly 64 byte long. one additional byte: Boom! -> https://sf.net/p/opendmarc/tickets/163/ Andreas