SMTP Return Code / Error Code

SMTP Return Code / Error Code

:: 확인방법

https://support.google.com/a/answer/3221692?hl=ko

:: 상세내용

https://en.wikipedia.org/wiki/List_of_SMTP_server_return_codes

https://serversmtp.com/smtp-error/

https://m.blog.naver.com/koromoon/120177927102