Server configured to use AWS SES, tested as working.
Mass mailing configured for default send - 50 in a batch, 30 seconds between batches.
Attempting to send 110 mass mailings, the server sends the first 12 emails, then all the remaining queued emails are returned as errors:
Code:
ROBERT RAPER <XXXXX@XXXX.COM>: Error sending email: The following From address failed: webserver@renoballoonregistration.com : MAIL FROM command failed, Sender already specified. ,503,SMTP server error: MAIL FROM command failed Detail: Sender already specified. SMTP code: 503
Last edit: 9 months 5 days ago by fdinkler. Reason: Correction - not CB Subs, just CB
Believe that happens if you try sending with a From Address that doesn't belong to that SMTP mail server. So basically the domains have to match or security kicks in and rejects the sending.
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