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SES Mail Receiving Issues

0

Dear Team, Since couple of days, we are having issues receiving emails over SES from certain sources only. Where we have errors, we get NDRs saying "Despite repeated attempts to deliver your message, the recipient's email system refused to accept a connection from your email system."

We checked the DNS (MX Records) and they are fine. Any idea what could be going on ? We are confused as the problem is not across all sources. For example, emails from yahoo/gmail come very quick. However, emails form hotmail are getting NDRs.

Thanks.

Topics
Front-End Web & MobileBusiness Applications
Tags
Amazon Simple Email Service
Language
English
geek876
asked 10 months ago294 views
1 Answer
0

Hi, did you try to send individual emails to those addresses (or similar test ones that you created) to really validate that the issue is not on recipient mail server side ? You would then probably get other info re. NDRs

Similarly, to get more details about such problems, setting SNS notifications providing more details is very useful. See https://docs.aws.amazon.com/ses/latest/dg/notification-contents.html

Hope it helps! Didier

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EXPERT
Didier_Durand
answered 10 months ago
  • geek876
    10 months ago

    Thanks for your feedback. Yes, we had tried sending individual emails. So email to same recipient from someone@yahoo.com works however, from someone2@hotmail.com never arrives and results in an NDR. I was wondering if there were any logs we could see on SES on the SES Side. Most SES Stats seems to be delivery (sending) related. The sender gets NDR with as below. The IP (52.5.58.6 mentioned in NDR seems to be Amazon one)

    email@mydomain.com 7/13/2023 11:03:39 AM - Server at LO0P123MB6939.GBRP123.PROD.OUTLOOK.COM returned '550 5.4.316 Message expired, connection refused(Socket error code 10061)' 7/13/2023 10:53:12 AM - Server at mydomain.com (52.5.58.6) returned '450 4.4.316 Connection refused [Message=Socket error code 10061] [LastAttemptedServerName=mydomain.com] [LastAttemptedIP=52.5.58.6:25] [SmtpSecurity=-2;-2] [CWLGBR01FT030.eop-gbr01.prod.protection.outlook.com 2023-07-13T10:53:39.401Z 08DB82ED0BE846D1](Socket error code 10061)'

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