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Home/ Questions/Q 832631
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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T04:23:33+00:00 2026-05-15T04:23:33+00:00

The emails now send from my local, but do not send from my box.

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The emails now send from my local, but do not send from my box. I am returned this error. Anyone know what this might be?

Net::SMTPAuthenticationError (535 5.7.8 Error: authentication failed: authentication failure
):

My environments/production.rb

ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
  :address => "smtp.sendgrid.net",
  :port => '25',
  :domain => "mydomain.com",
  :authentication => :plain,
  :user_name => "email@gmail.com",
  :password => "password1234"
 }

/etc/ssmtp/ssmtp.conf :

root=postmaster
mailhub=smtp.sendgrid.net
AuthUser=email@gmail.com
AuthPass=password1234
AuthMethod=LOGIN
rewriteDomain=mydomain.com
FromLineOverride=YES
UseSTARTTLS=NO
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  1. Editorial Team
    Editorial Team
    2026-05-15T04:23:34+00:00Added an answer on May 15, 2026 at 4:23 am

    This usually happens because your account hasn’t been provisioned.

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