relay access denied 554 5.7.1 outlook的相關公司資訊
554 5.7.1 Relay access denied | OutlookForums by Slipstick.com

554 5.7.1 Relay access denied | OutlookForums by Slipstick.com

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日期:2026-04-23
Hi, We are unable to send emails via our Exchange server using Pop3. The NDR is - The following recipients could not be reached: 'user@domain.com' 554 5.7.1 : Relay access denied Exchange: Pop3 & SMTP Virtual servers are configured Outlook account ......看更多