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Re: SMTP server error message
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From: |
Florian Weimer |
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Subject: |
Re: SMTP server error message |
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Date: |
Sat, 31 May 2014 16:27:47 +0200 |
* Eli Zaretskii:
> 451 4.0.0 Spam filter end message failed - server - license [slot 1]
> What does that response mean, and what can I do to avoid it (apart
> of hacking smtpmail)?
Looks like a problem at your ISP. They probably have a cluster node
that is broken, and sending again hits a node that works.