Dovecot Login or pop3 method PLAIN
Hello,
I have a question about how a user can login to exim/dovecot without pop3/imap/webmail login!
I see from logs: /var/log/maillog that users connects as:
But also from /var/log/exim_mainlog I noticed that a user that is not before connected (send mail) as pop3/imap/webmail login they can send message as:
Is possible a user send mail from smtp without connect before as pop3/imap? What is the difference that I see in logs from A=dovecot_login vs A=dovecot_plain Some users do that and some other no. Can please explain how can they use SMTP connection to send email without login to pop3/imap/webmail? A mail client as outlook/thunderbird do that? I want to be sure that this connection is legitimate and not something else... From the logs seems is legitimate but how they can do that? Thank you very much!
pop3-login: Login: user=, method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, mpid=SOMENUMBER, TLS, session=But also from /var/log/exim_mainlog I noticed that a user that is not before connected (send mail) as pop3/imap/webmail login they can send message as:
SMTP connection from [xxx.xxx.xxx.xxx]:1020 (TCP/IP connection count = 1)
P=esmtpsa X=TLSv1:DES-CBC3-SHA:168 CV=no A=dovecot_login
SMTP connection from ISP notes (PC USER ID) [xxx.xxx.xxx.xxx]:1020 closed by QUITIs possible a user send mail from smtp without connect before as pop3/imap? What is the difference that I see in logs from A=dovecot_login vs A=dovecot_plain Some users do that and some other no. Can please explain how can they use SMTP connection to send email without login to pop3/imap/webmail? A mail client as outlook/thunderbird do that? I want to be sure that this connection is legitimate and not something else... From the logs seems is legitimate but how they can do that? Thank you very much!
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Hello @cPanelMichael ! Your answer help me clear and understand how exim/dovecot works after 58 version! The user simply needs to authenticate via SMTP with valid credentials to send a message.
Can please give me an example how I can make an SMTP authentication without POP3/IMAP login? I use thunderbird as mail client and before send messages every time I have imap or pop3 authentication... I want just to test from my part that behavior! Thank you!0 -
[QUOTE="net@work, post: 2430171, member: 813191">Can please give me an example how I can make an SMTP authentication without POP3/IMAP login? I use thunderbird as mail client and before send messages every time I have imap or pop3 authentication...
Hello, You can setup a test PHP script that sends email via SMTP and doesn't checking incoming email: Sending email with PHP from an SMTP server Thank you.0 -
Hello @cPanelMichael ! Thank you for the response and the example!! All are clear now to me!! :) 0
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