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# base | |
smtp (simple mail transfer protocol) | |
# telnet | |
telnet <host> // port: 23 | |
telnet <host> <port> | |
telnet localhost 25 // enter interactive interface | |
# interactive (with hMailServer) | |
220 xxx ESMTP // xxx is server name | |
EHLO yyy // yyy is client domain name (or ex. EHLO HelloWorld) | |
250-xxx | |
250-SIZE 20480000 | |
250-AUTH LOGIN | |
250 HELP | |
HELP | |
211 DATA HELO EHLO MAIL NOOP QUIT RCPT RSET SAML TURN VRFY | |
NOOP | |
250 OK | |
VRFY hochun836@gmail.com | |
502 VRFY disallowed. | |
RCPT TO: <bbb@bbb.com> | |
503 must have sender first. | |
DATA | |
503 Must have sender and recipient first. | |
MAIL FROM: <aaa@aaa.com> // MAIL FROM: aaa@aaa.com (ok), MAIL FROM:aaa@aaa.com (ok) | |
250 OK | |
MAIL FROM: <ccc@ccc.com> | |
503 Issue a reset if you want to start over | |
RSET | |
250 OK | |
MAIL FROM: <aaa@aaa.com> // if the mail address doesn't exist in 'Domains', it is considered as a 'external e-mail address', otherwise it is a "local e-mail address" | |
250 OK | |
RCPT TO: <bbb@bbb.com> // if the mail address doesn't exist in 'Domains', it is considered as a 'external e-mail address', otherwise it is a "local e-mail address" | |
530 SMTP authentication is required. // according to MAIL FROM & RCPT TO & 'Require SMTP authentication' (Settings > Advanced > IP Ranges > (mateched high priority) > Require SMTP authentication) | |
RSET | |
MAIL FROM: <test@thishost> | |
250 OK | |
RCPT TO: <bbb@bbb.com> | |
250 OK | |
DATA | |
354 OK, send. | |
Subject: Test Mail | |
From: xxx@aaa.com // the mail address just shows on the mail | |
To: yyy@bbb.com // the mail address just shows on the mail | |
// need a empty line | |
This is a test email sent via Telnet. | |
. // DATA finish | |
250 Queued (zzz seconds) | |
QUIT // close interactive interface | |
221 goodbye | |
Connection to host lost. | |
# interactive command | |
HELO (Hello) | |
EHLO (Extended Hello) | |
NOOP (No Operation) | |
RSET (Reset) | |
VRFY (Verify) | |
# in hMailServer, 530 SMTP authentication is required | |
AUTH LOGIN | |
334 VXNlcm5hbWU6 // VXNlcm5hbWU6 is the base64 of Username: | |
dGVzdEBsb2NhbGhvc3Q= // dGVzdEBsb2NhbGhvc3Q= is the base64 of test@localhost | |
334 UGFzc3dvcmQ6 // UGFzc3dvcmQ6 is the base64 of Password: | |
MVFhejJ3c3g= // MVFhejJ3c3g= is the base64 of 1Qaz2wsx | |
235 authenticated. | |
=> ref: https://blog.csdn.net/FunchMin/article/details/106958118 | |
=> ref: https://mailtrap.io/blog/smtp-auth/ | |
# in hMailServer, log file | |
| Settings > Logging | |
check 'Enabled' | |
check 'SMTP' | |
C:\Program Files (x86)\hMailServer\Logs\ | |
# in hMailServer, IP Ranges | |
| Settings > Advanced > IP Ranges | |
- Priority | |
a higher value means higher priority | |
- Lower ip & Upper ip | |
for matching smtp client ip | |
- Require SMTP authentication | |
if the 'MAIL FROM' mail address doesn't exist in 'Domains', it is considered as a 'external e-mail address', otherwise it is a "local e-mail address" | |
if the 'RCPT TO' mail address doesn't exist in 'Domains', it is considered as a 'external e-mail address', otherwise it is a "local e-mail address" | |
'External to external e-mail address' should normally always be selected (if you do not require authentication when external users sends messages through your server, your server will be abused by spammers) | |
=> ref: https://www.hmailserver.com/documentation/latest/?page=reference_iprange | |
# in hMailServer, reset administrator password | |
C:\Program Files (x86)\hMailServer\Bin\hMailServer.INI | |
[Security] | |
AdministratorPassword=7cba6767a5489b002c08bdb068cac033 // 7cba6767a5489b002c08bdb068cac033 is the MD5 of 1Qaz2wsx | |
# in hMailServer, ide vs. server | |
hMailServer Administrator (ide) | |
hMailServer (server) | |
like | |
SQL Server Management Studio (ide) | |
SQL Server (server) | |
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