Forum Discussion

Tim Hunter's avatar
Tim Hunter
Steel Contributor
Apr 28, 2020

Email Delivery Delay

Email shows delivered at 1:59PM, however, it did not arrive in Inbox until 2:20PM. Any ideas on how to troubleshoot this? Screenshots attached.

exchange
office 365
outlook for windows

2 Replies

  • kokoro's avatar
    kokoro
    Occasional Reader
    May 29, 2026

    Hi,

    I had yesterday a similar issue, with hours of delay on outlook.com,
    with an impact as double factor authentification failed on another website.

    I checked MS servers status at :

    https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect but only MS Azure (West US 2) is degraded while email headers (here below) are pointing to EurPrd01 and EurPrd04.

    Would MS support mind to explain the 9 hours delay, please ?

    BR,
    Gwen

    Received: from DU4PR01MB10979.eurprd01.prod.exchangelabs.com (::1) by

    FRZPR01MB12990.eurprd01.prod.exchangelabs.com with HTTPS; Fri, 29 May 2026

    00:28:14 +0000

    Received: from DU2PR04CA0225.eurprd04.prod.outlook.com (2603:10a6:10:2b1::20)

    by DU4PR01MB10979.eurprd01.prod.exchangelabs.com (2603:10a6:10:58f::5) with

    Microsoft SMTP Server (version=TLS1_2,

    cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.71.12; Thu, 28 May

    2026 15:11:50 +0000

  • serverpro's avatar
    serverpro
    Brass Contributor
    May 02, 2020
    Issue with outlook application or with both owa and outlook?
    Is outlook in cached mode or online?
    Issue with only one user of many?
    Is exchange on premises involved?
    Check if there is any service interruption going on with exchange online. You will get this information inside service health in admin center.