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"Must complete image puzzle before sending" when using AOL as email provider

Issue

Using AOL as email provider the following error messages comes every two days:

2014-06-12 15:11:06 E-mail was NOT sent: 521 5.2.1 MUST COMPLETE IMAGE PUZZLE BEFORE SENDING.
PLEASE GOTO http://challenge.aol.com/spam.html

Product Line

EcoStruxure Building Expert

Environment

  • SmartStruxure Lite MPM
  • AOL

Cause

This is AOL trying to stop people using its email service to generate spam, you are now required to periodically enter a series of numbers or letters from a web page in addition to normal username and password authentication.

Resolution

See AOL help to understand the issue further. This post on the internet also notes the issue and unfortunately this is something that AOL has added and is not under our control.

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