[2026-09-02 23:54:13] production.ERROR: send-email-user ["Expected response code 354 but got code \"503\", with message \"503-All RCPT commands were rejected with this error:\r\n503-Outgoing mail from \"taitrusts.com\" has been suspended.\r\n503 Valid RCPT command must precede DATA\r\n\""] 
[2026-09-02 23:54:17] production.ERROR: send-email-user ["Expected response code 354 but got code \"503\", with message \"503-All RCPT commands were rejected with this error:\r\n503-Outgoing mail from \"taitrusts.com\" has been suspended.\r\n503 Valid RCPT command must precede DATA\r\n\""]