24 lines
795 B
Markdown
24 lines
795 B
Markdown
[[!meta title="Ruby on Rails: Fix the hostname does not match the server certificate error"]]
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## The problem
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If you encounter this problem when running Ruby on Rails:
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OpenSSL::SSL::SSLError (hostname "localhost" does not match the server certificate)
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it is likely due to
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[ActionMailer](http://api.rubyonrails.org/classes/ActionMailer/Base.html)
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using the **smtp** as the ***delivery_method*** and
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your local mail server supporting TLS/SSL,
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but not having a correct/valid certificate.
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## The solution
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You can add a valid certificate, but if the server is just used
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for sending out mails, this may not be suited.
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In that case, you can change the ***delivery_method*** to
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**sendmail**, which makes ActionMailer use the sendmail
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binary directly.
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[[!tag net unix foss ungleich rails]]
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