Openssl::ssl::sslerror:hostname was wasn't match with the server certificate

Gitlab Configure the mail delivery service will always not receive mail, check/var/log/mail.log, performance behavior for connection TLS and then disconnect, check Gitlab/log/sidekiq.log said Openssl::ssl::sslerror does Not match the server certificate

The solution is: do not validate the

An infinitely better solution (in terms of security, that's) than the accepted answer would be:

ACTIONMAILER::BASE.SMT P_settings = {
  : Address =              "mail.foo.com",
  :p ort                 = 587,
  :d omain =               "Foo.com",
  : User_name            = "addy@foo.com",
  :p assword             = "Foofoo",
  : Authentication       = " Plain ",
  : Enable_starttls_auto = True,
  : openssl_verify_mode  = ' None '
}
this You'll still be using encryption, but the validation of the certificate would is disabled (and you won ' t is getting any ER rors).

Reference

Http://stackoverflow.com/questions/4505795/rails-3-opensslsslsslerror-hostname-was-not-match-with-the-server-certific