2. Gitlab
  3. Gitlab SMTP not work via external smtp

Gitlab SMTP not work via external smtp

When gitlab try to send email via external smtp server, sidekiq mail queue crash with error like:

SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

Fix for package installed gitlab:

Edit /etc/gitlab/gitlab.rb and add:

For ubuntu system wide ca bundle:

gitlab_rails['smtp_ca_file'] = "/etc/ssl/certs/ca-certificates.crt"

For centos system wide ca bundle:

gitlab_rails['smtp_ca_file'] = "/etc/pki/tls/certs/ca-bundle.crt"

Or omnibus gitlab package:

gitlab_rails['smtp_ca_file'] = "/opt/gitlab/embedded/ssl/cert.pem"

Then run gitlab-ctl reconfigure.

For gitlab installed from source code:

Edit file config/initializers/smtp_settings.rb:

ActionMailer::Base.smtp_settings = {
    authentication: :login,
    ...
    # For ubuntu
    ca_file: "/etc/ssl/certs/ca-certificates.crt",
    # For centos
    #ca_file: "/etc/pki/tls/certs/ca-bundle.crt",
}

Finnaly restart gitlab service:

service gitlab restart

Links

  1. SSL certification error #1558
  2. SMTP Gmail account working on gitlab but not on gitlab-ci #2143

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