[AutoQA] #234: output.log

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#234: output.log
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 Reporter:  kparal     |       Owner:                        
     Type:  task       |      Status:  new                   
 Priority:  major      |   Milestone:  Outdated documentation
Component:  docs/wiki  |     Version:  1.0                   
 Keywords:             |  
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 Commit 03ca1e86ceed16dd58ae3ef606362980012894d0 ensured all email output
 is stored in output.log. We should mention it in the docs.