Linux mail server test with login
telnet mailserver.com 25
EHLO mailserver.com
# 回應
250-mailserver.com
250-PIPELINING
250-SIZE 50000000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
# 登入 ,如果是 base64 須將密碼 encode
AUTH LOGIN
# 輸入帳號
334 TESTcm5hbW**
aT5mb3EtSTRpb2**
# 輸入密碼
334 TESzc3tvcm**
T211bEliST**
# 失敗訊息
535 5.7.8 Error: authentication failed: authentication failure
Referfence