// how to fix
Not sure what is wrong?How to fix email problems
Your test or scan found a problem? Find the matching guide below: what it means, why it matters, and how to fix it step by step.
Bounce 60
DNS 52
SPF 40
Reputation 39
DMARC 38
DKIM 34
Security 26
Gmail 21
Blacklist 18
Microsoft 365 17
Mailing list 16
Content 15
Mail server 13
Headers 12
Reverse DNS 12
SMTP 12
Spam score 12
Outlook 10
MX 9
Amazon SES 7
Google Workspace 5
TLS 5
Yahoo 5
Mailgun 4
Postmark 3
Apple 2
SendGrid 2
WordPress 2
Zoho 2
ARC 1
BIMI 1
Cloudflare 1
E-commerce 1
GMX 1
Resend 1
T-Online 1
7 guides · tag Amazon SES
| Problem | In short | Tags | |
|---|---|---|---|
| Amazon SES "Email address is not verified": sandbox and identities fixed | Amazon SES rejects your email because a sender or recipient identity is not verified. Verify identities, leave the sandbox and send safely. | Fix it | |
| Amazon SES DKIM verification pending or failed: how to fix it | Your Amazon SES domain stays "Pending" or shows DKIM "Failed". Check the three CNAME records, common DNS mistakes and how to restart verification. | Fix it | |
| Amazon SES custom MAIL FROM domain: SPF alignment for DMARC | Amazon SES uses an amazonses.com bounce domain, so SPF does not align with DMARC. Set up a custom MAIL FROM subdomain with the right MX and SPF. | Fix it | |
| Amazon SES account under review or paused: bounce and complaint rate | Your Amazon SES account is under review or sending is paused because of bounces or complaints. Learn the thresholds, find the cause and reply to AWS. | Fix it | |
| Amazon SES SMTP "535 Authentication Credentials Invalid": fix it | Amazon SES rejects your SMTP login with 535 Authentication Credentials Invalid. Use real SMTP credentials, the right Region and endpoint, and test them. | Fix it | |
| Amazon SES "Throttling: Maximum sending rate exceeded" (454): fix it | Amazon SES returns "Maximum sending rate exceeded" or "Daily message quota exceeded". Check your quotas, slow down sending and request an increase. | Fix it | |
| Amazon SES address on the suppression list: why it is not delivered | Amazon SES accepts your email but never delivers it because the address is on your account-level suppression list. Find why and remove it safely. | Fix it |
Not sure what is wrong?
Send a test email or scan your domain: the report tells you which problem you have.