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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
getting these two error messages when sending to yahoo
1/11/2024 3:34:15 PM - Server at DS0PR14MB7526.namprd14.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError'
1/11/2024 3:24:36 PM - Server at PH0PR14MB6715.namprd14.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to ConnectionReset'
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(16, 12%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER6%3C/text%3E%3C/svg%3E)
No, you don't have any issue and you are not responsible for anything because you are the recipient. It is the responsibility of those who use personal domain whose email to you (at yahoo.com) are bouncing back to them.
This is what I've been getting for the last few days:
3/11/2024 9:22:01 AM - Server at DS0PR15MB5525.namprd15.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError'
3/11/2024 9:17:38 AM - Server at mta6.am0.yahoodns.net (98.136.96.76) returned '421 4.4.2 Connection dropped due to SocketError'
Original message headers:
Received: from MW4PR15MB4492.namprd15.prod.outlook.com (2603:10b6:303:105::13)
by DS0PR15MB5525.namprd15.prod.outlook.com (2603:10b6:8:137::11) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7362.34; Mon, 11 Mar
2024 05:39:29 +0000
Received: from MN6PR15MB6028.namprd15.prod.outlook.com (2603:10b6:208:46c::5)
by MW4PR15MB4492.namprd15.prod.outlook.com (2603:10b6:303:105::13) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7362.34; Sun, 10 Mar
2024 22:28:54 +0000
Received: from BLAPR15MB3874.namprd15.prod.outlook.com (2603:10b6:208:272::10)
by MN6PR15MB6028.namprd15.prod.outlook.com (2603:10b6:208:46c::5) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7362.33; Sun, 10 Mar
2024 20:18:30 +0000
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;