DNS query failed, 無論 mail server/filter 在不在你手上, 都不會有log. 你校的authoritative DNS s...
請問廠商的 PowerDNS Authoritative Server, master/slave(或稱primary/secondary), zone...
https://www.postfix.org/LOCAL_RECIPIENT_README.html Configuring local_recipie...
1)Dovecot quota, 參考文件較多 https://doc.dovecot.org/configuration_manual/quota/...
參考 https://superuser.com/questions/495759/why-is-ping-unable-to-resolve-a-name-w...
有試過啟用 DNS over HTTPS (DoH/加密DNS) ? https://websetnet.net/zh-TW/how-to-enable-dn...
2020Q2試過, 實體機Q6600 4GB, Debian-9.x(必須用64bits), 沒遇到你說的狀況, 但也只試到 3 user 參考的是 http...
SpamAssassin只能計分喔, 擋信要靠其它方法. 觀察標的應以原始內容(mail header/body)出現的為準, 而不是mail client...
ayu的鐵人檔案