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kinnik.baster@gmail.com (expanded from matsumotokazuya@tottori-u.ac.jp): host gmail-smtp-in.l.google.com[74.125.203.26] said: 550-5.7.26 Unauthenticated email from uva.nl is not accepted due to domain's 550-5.7.26 DMARC policy. Please contact the administrator of uva.nl domain if 550-5.7.26 this was a legitimate mail. To learn about the DMARC initiative, go 550-5.7.26 to 550 5.7.26 https://support.google.com/mail/?p=DmarcRejection d2e1a72fcca58-7247712e420si2023576b3a.83 - gsmtp (in reply to end of DATA command)