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
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