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ThunderbirdからDovecotへ接続した際にPermission Deniedと表示されてしまう

Last updated at Posted at 2020-08-24

環境

  • Centos7.8
  • dovecot-2.2.36-6.el7.x86_64
  • Maildir形式ではなく、Mailbox形式にすると発生

エラーメッセージ

/var/log/mail.log
Aug 25 00:11:46 mail1 dovecot: imap(cent): Error: fchown(/home/cent/mail/.imap/INBOX, group=12(mail)) failed: Operation not permitted (egid=1000(cent), group based on /var/mail/cent - see http://wiki2.dovecot.org/Errors/ChgrpNoPerm)

対処方法

  • メールボックスファイルのパーミッションが過剰
chmod 0600 /var/mail/*

参考

  • 原因はパーミッションがゆるすぎるからみたい

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