Support » Plugin: Post SMTP Mailer/Email Log » Same SMTP config input to primary server run well, but put to fallback error:

  • Same SMTP config input to primary server runs well, but input to fallback server error:

    5.7.8 Error: authentication failed: Invalid authentication mechanism

    • This topic was modified 3 months, 4 weeks ago by fordiy.
  • You must be logged in to reply to this review.