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  1. Jenkins
  2. JENKINS-19083

Jenkins isn't sending email, also saw NoClassDefFoundError: hudson/tasks/Mailer

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    Description

      Jenkins has stopped sending emails. In the Config for builds, under Post-Build Actions > Editable Email Notification, an ERROR link when clicked shows the following error:
      javax.servlet.ServletException: java.lang.NoClassDefFoundError: hudson/tasks/Mailer

      Build success emails are not coming through either, though console output for the build says email was triggered: "Email was triggered for: Success
      Sending email for trigger: Success"

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-19089 java.lang.NoClassDefFoundError: org/sonatype/aether/util/StringUtils wrong StringUtils class

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. JENKINS-19089 java.lang.NoClassDefFoundError: org/sonatype/aether/util/StringUtils wrong StringUtils class

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

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            View 54 older comments
            slide_o_mix Alex Earl added a comment -

            Can you try downgrading to 1.4?

            slide_o_mix Alex Earl added a comment - Can you try downgrading to 1.4?
            flyingchipmunk Matthew Veno added a comment -

            I downgraded email-ext to 2.27.1 and now I'm seeing build emails again.

            flyingchipmunk Matthew Veno added a comment - I downgraded email-ext to 2.27.1 and now I'm seeing build emails again.
            slide_o_mix Alex Earl added a comment -

            Have you tried any version in between 2.32 and 2.27.1?

            slide_o_mix Alex Earl added a comment - Have you tried any version in between 2.32 and 2.27.1?
            flyingchipmunk Matthew Veno added a comment -

            No I haven't. That was the version presented as a downgrade option in the manage plugins page.

            flyingchipmunk Matthew Veno added a comment - No I haven't. That was the version presented as a downgrade option in the manage plugins page.
            slide_o_mix Alex Earl added a comment -

            If you're still feeling adventurous, can you try installing the snapshot for 2.33 from here: https://buildhive.cloudbees.com/job/jenkinsci/job/email-ext-plugin/188/org.jenkins-ci.plugins$email-ext/

            slide_o_mix Alex Earl added a comment - If you're still feeling adventurous, can you try installing the snapshot for 2.33 from here: https://buildhive.cloudbees.com/job/jenkinsci/job/email-ext-plugin/188/org.jenkins-ci.plugins$email-ext/

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              slide_o_mix Alex Earl
              jravetch Jared Ravetch
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