[Tickets #14005] Re: Inconsistent message for SMTP error 554

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Ticket URL: https://bugs.horde.org/ticket/14005
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  Ticket             | 14005
  Updated By         | Michael Slusarz <slusarz at horde.org>
  Summary            | Inconsistent message for SMTP error 554
  Queue              | IMP
  Version            | Git master
  Type               | Bug
-State              | Unconfirmed
+State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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Michael Slusarz <slusarz at horde.org> (2015-06-05 09:55) wrote:

You are confusing the RFC requirement - which concerns error messages  
output by the server intended to be displayed by an *admin* - with the  
error message intended to be displayed to a *user*.

For 554 errors, without extended error codes, there is not a single,  
simple message that works for all server responses.  (If anything, we  
should probably be even MORE general with the response, e.g. "There  
was an error when trying to send the message").

What you are asking for is already provided.  Not only is the error  
message available in SMTP debug logs, but it will be logged to the  
Horde error log (at least as of IMP 7.0).

You absolutely cannot be appending the direct content of SMTP error  
messages to user displayable data.  That is a recipe for disaster.