Introduction:
As a AWS Cloud ESP (Email Service Provider), we send bulk emails, including transactional emails, on behalf of our clients. Recently, we have encountered two distinct types of email delivery failures, and while we have a solution for the first type, we are seeking an effective solution for the second.
**
- Issue with Domain-Identified Emails (Solved):**
Error Message Example:
Error: An error occurred while trying to deliver the mail to the following recipients: test@ya&oo.co.in
Reporting-MTA: dns; a9-37.smtp-out.ama2onses.com
Action: failed
Diagnostic-Code: smtp; 552 1 Requested mail action aborted, mailbox not found
Status: 5.3.0
Understanding and Resolution:
These errors occur when the client’s domain lacks proper email authentication records (DKIM, SPF, and DMARC).
Resolution: We assist clients in configuring these DNS records for their domain to ensure successful email delivery.
**2. Issue with Public Email Providers (Unresolved):
**
Error Message Example:
From: mailer daemon address of A W S
Sent: Monday, July 15, 2024, 1:16 PM
To: companyxyz
Subject: Undeliverable: test subject line
Error Details:
An error occurred while trying to deliver the mail to the following recipients: test1234@gm#il.com
Problem Explanation:
In this scenario, the delivery failure is related to public email providers like Gmail or Outlook.
Unlike domain-specific failures, there is no diagnostic code, status, or detailed error message provided, making it difficult to identify the root cause.
Current Workaround:
We currently advise clients to use a new Gmail or Outlook address as a temporary fix, assuming it might be a reputation issue. However, this is not a reliable or scalable solution.
Request for Assistance:
We are seeking an effective method to identify and resolve email delivery failures for public email providers (Gmail, Outlook) without having to rely on creating new email addresses. Any guidance on obtaining diagnostic information or best practices to improve deliverability would be highly appreciated.
AWS OFFICIALUpdated a month ago
Hi @Kidd Ip, Kindly provide me solution for this, how to achieve good reputation as am the ESP for my clients, so here whose reputation getting compromised ? hope so you are talking about my clients IP reputation over which they using Gmail or public email platforms, and we are not using suppression list instead we are using email-ignore-list table in DB which dose not send emails to listed email ids from that table. Multiple scenarios are there where our one client sending emails to his client using website to 50 ppl 10 15 ppl receive and others not this is in case of gmail etc.