Recently I going through unanswered questions pool to find *interesting* unsolved questions. In one question 

[E-mails being relayed to other server](http://serverfault.com/questions/495763/e-mails-being-relayed-to-other-server)

there are no answer provided. Why? Because OP has solve his problem by [burn broken system and set them up from scratch][1].

Another example is this question [dovecot mysql auth mechanism](http://serverfault.com/questions/488222/dovecot-mysql-auth-mechanism). It was deleted  after I flagged it **Too localized, OP solved it by reinstall the system**.

Yes, those questions were on-topic. But, in the end OP decide to reinstall his system - [that may be useful to some future reader but it's not a useful sysadmin answer][2]. IMHO, reinstalling system was the last solution for every troubleshooting step.

What's the proper way to handle the question?  Should I flagged it for deletion like before?


  [1]: http://serverfault.com/questions/495763/e-mails-being-relayed-to-other-server#comment-556128
  [2]: https://meta.serverfault.com/a/6535/218590