smtp auth login plain

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AUTH Command and its Mechanisms (PLAIN, LOGIN, CRAM-MD5 ...

    https://www.samlogic.net/articles/smtp-commands-reference-auth.htm
    The AUTH command is an ESMTP command (SMTP service extension) that is used to authenticate the client to the server. The AUTH command sends the clients username and password to the e-mail server. AUTH can be combined with some other keywords as PLAIN, LOGIN, CRAM-MD5 and DIGEST-MD5 (e.g. AUTH LOGIN) to choose an authentication mechanism.
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    https://www.samlogic.net/articles/smtp-commands-reference-auth.htm

SMTP AUTH: SMTP authentication | the right protocol ...

    https://www.ionos.com/digitalguide/e-mail/technical-matters/smtp-auth/
    Navigate to “ Outgoing server (SMTP) ” select your mail server and click “ Edit ” Activate the option “ Use username and password” and enter your e-mail address Confirm the settings with “ OK ” The configuration of SMTP AUTH can be checked in the Mozilla Thunderbird account settings. The following are a set of instructions for Outlook:
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    https://www.ionos.com/digitalguide/e-mail/technical-matters/smtp-auth/

How to Test SMTP AUTH using Telnet - NDCHost.com

    https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet
    April 1, 2017 - Now you should have received a message telling you that you successfully authenticated. If it failed your user/pass may have been wrong or your mailserver is broken. Below is a log of a real successful SMTP AUTH connection over Telnet:
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    https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet

Troubleshooting the SMTP server - auth login - IBM

    https://www.ibm.com/docs/fi/SSYMRC_6.0.6.1/com.ibm.jazz.repository.web.admin.doc/topics/c_troubleshoot_smtp.html
    Open a command prompt and enter the following commands to verify if SMTP requires authentication. telnet EHLO AUTH LOGIN.
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SMTP AUTH LOGIN and SMTP AUTH PLAIN - hMailServer forum

    https://www.hmailserver.com/forum/viewtopic.php?t=769
    A smtp mail client support PLAIN, LOGIN and CRAM-MD5. The client should prefere to use CRAM-MD5 if the server support it. If CRAM-MD5 is not supported by the server, the client should look for LOGIN in the AUTH message from the server. And as a last resort the PLAIN auth should be used. Is this correct in your opinion? martin Developer Posts: 6842
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How to test SMTP Authentication and StartTLS - Sysadmins ...

    https://www.saotn.org/test-smtp-authentication-starttls/
    Here you notice AUTH PLAIN LOGIN as a log-in method. The SMTP mail server supports the authentication mechanism you want. Your complete username and password log-in information is wrapped in the base64 encoded string. Use that to authenticate: AUTH PLAIN AHVzZXJuYW1lQGV4YW1wbGUuY29tAG15X3Bhc3N3b3Jk
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    https://www.saotn.org/test-smtp-authentication-starttls/

ruby on rails - What is the difference between using `:plain` vs ...

    https://stackoverflow.com/questions/59464979/what-is-the-difference-between-using-plain-vs-login-in-active-mailer-smtp
    According to ActionMailer documentation here irrespective of authentication :plain or :login the password is always Base64 encoded. The problem with Base64 encoding is that it can be easily decoded by anybody eavesdropping in on the SMTP communication. So both of these authentication mechanisms are really the same in terms of security.
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    https://stackoverflow.com/questions/59464979/what-is-the-difference-between-using-plain-vs-login-in-active-mailer-smtp

SMTP Authentication - Ring of Saturn Internetworking

    https://networking.ringofsaturn.com/Protocols/smtpauth.php
    Here, the Netscape client immediately blasts the authentication information to the server (including the artificial authorization identity 'test') without waiting for the server to announce his SMTP Auth capabilites. While for AUTH PLAIN and LOGIN clear user names and password are transmitted, ...
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    https://networking.ringofsaturn.com/Protocols/smtpauth.php

How to Handle SMTP Authentication | Mailtrap Blog

    https://mailtrap.io/blog/smtp-auth/
    What is SMTP AUTH and how does it work? — SMTP authentication or simply SMTP AUTH is the service ... most common mechanisms: PLAIN, LOGIN, and CRAM-MD5.
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    https://mailtrap.io/blog/smtp-auth/

How to Handle SMTP Authentication | Mailtrap Blog

    https://mailtrap.io:443/blog/smtp-auth/
    August 27, 2021 - As a rule, servers use the three most common mechanisms: PLAIN, LOGIN, and CRAM-MD5. There are also other options that we’ll talk about later. Now, let’s take a look at authentication in action. After the SMTP handshake, the client sends the EHLO command to the server.
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    https://mailtrap.io:443/blog/smtp-auth/

smtplib — SMTP protocol client — Python 3.10.4 documentation

    https://docs.python.org/3/library/smtplib.html
    Apr 16, 2022 · The smtplib module defines an SMTP client session object that can be used to send mail to any internet machine with an SMTP or ESMTP listener daemon. For details of SMTP and ESMTP operation, consult RFC 821 (Simple Mail Transfer Protocol) and RFC 1869 (SMTP Service Extensions).. class smtplib.SMTP (host='', port=0, local_hostname=None, [timeout, ] …
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    https://docs.python.org/3/library/smtplib.html

SMTP transport - Nodemailer

    https://nodemailer.com/smtp/
    General options. port – is the port to connect to (defaults to 587 if is secure is false or 465 if true); host – is the hostname or IP address to connect to (defaults to ‘localhost’); auth – defines authentication data (see authentication section below); authMethod – defines preferred authentication method, defaults to ‘PLAIN’; Hostnames for the host field are resolved using ...
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    https://nodemailer.com/smtp/

c - How to use user name and password in AUTH PLAIN? - Stack Overflow

    https://stackoverflow.com/questions/6921920/how-to-use-user-name-and-password-in-auth-plain
    November 10, 2011 - I am trying to send Email using telnet and smtp.mail.yahoo.com server. when I try to authenticate myself on server using my yahoo mail ID and password. the server gave me Error; ... I am using AUTH PLAIN mechanism. I don't know how to combine user name and password.
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    https://stackoverflow.com/questions/6921920/how-to-use-user-name-and-password-in-auth-plain

JavaMail API - SMTP Servers - Tutorialspoint

    https://www.tutorialspoint.com/javamail_api/javamail_api_smtp_servers.htm
    The default is "LOGIN PLAIN DIGEST-MD5 NTLM", which includes all the authentication mechanisms supported by the current implementation. mail.smtp.auth.login.disable : boolean: If true, prevents use of the AUTH LOGIN command. Default is false. mail.smtp.auth.plain.disable: boolean: If true, prevents use of the AUTH PLAIN command. Default is false.
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    https://www.tutorialspoint.com/javamail_api/javamail_api_smtp_servers.htm

Troubleshooting the SMTP server - auth login - IBM

    https://www.ibm.com/docs/SSYMRC_6.0.6.1/com.ibm.jazz.repository.web.admin.doc/topics/c_troubleshoot_smtp.html
    Open a command prompt and enter the following commands to verify if SMTP requires authentication. telnet EHLO AUTH LOGIN.
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RFC 4954 - SMTP Service Extension for Authentication

    https://tools.ietf.org/html/rfc4954
    Additional Requirements When Using SASL PLAIN over TLS ........17 15. Changes since RFC 2554 ........................................18 1. Introduction This document defines a Simple Mail Transport Protocol (SMTP) extension whereby an SMTP client may indicate an authentication mechanism to ...
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    https://tools.ietf.org/html/rfc4954

Postfix Configuration Parameters

    http://www.postfix.org/postconf.5.html
    The LMTP-specific version of the smtp_sasl_auth_cache_name configuration parameter. See there for details. This feature is available in Postfix 2.5 and later. lmtp_sasl_auth_cache_time (default: 90d) The LMTP-specific version of the smtp_sasl_auth_cache_time configuration parameter. See there for details.
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MailConnectException: Couldn't connect to host, port: smtp ...

    https://stackoverflow.com/questions/43511080/mailconnectexception-couldnt-connect-to-host-port-smtp-gmail-com-465-timeo
    I know this is a very late answer, but want to share my experience when I face the same issue and tried almost Java core mail api, Apache mail api and Spring also for MimeMessage.. I tried 50+ times with Java JDK 1.7.0_80 and repeatedly failed with above subjected exception then I moved to JDK 1.8.0_151.. Now, before illustrating the source code, I will like to share my …
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    https://stackoverflow.com/questions/43511080/mailconnectexception-couldnt-connect-to-host-port-smtp-gmail-com-465-timeo

Mail Authentication

    http://support.aficio.com/bb_v1oi/pub_e/oi_view/0001043/0001043433/view/netsys/int/0057.htm
    SMTP Auth. Encryption: Select whether to encrypt the password or not. [Auto Select]: If the authentication method is PLAIN, LOGIN, CRAM-MD5, or DIGEST-MD5.
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    http://support.aficio.com/bb_v1oi/pub_e/oi_view/0001043/0001043433/view/netsys/int/0057.htm

email - What's different between "250-AUTH LOGIN PLAIN ...

    https://stackoverflow.com/questions/42852748/whats-different-between-250-auth-login-plain-and-250-auth-login-plain
    Authenticated SMTP is used to allow valid remote users to send mail through an SMTP server while still preventing spammers from connecting and using it as a relay. The second example, 250-AUTH=LOGIN PLAIN, is an identical command but is intended for non-RFC-compliant email clients.
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    https://stackoverflow.com/questions/42852748/whats-different-between-250-auth-login-plain-and-250-auth-login-plain

com.sun.mail.smtp (JavaMail API documentation)

    https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html
    It can optionally use SMTP Authentication using the LOGIN, PLAIN, DIGEST-MD5, and NTLM mechanisms (RFC 4616 and RFC 2831). To use SMTP authentication you'll need to set the mail.smtp.auth property (see below) or provide the SMTP Transport with a username and password when connecting to the SMTP server. You can do this using one of the following ...
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    https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html

Troubleshooting SMTP Auth Login Telnet | Exchange Server ...

    https://www.computerperformance.co.uk/exchange-2010/smtp-auth-login/
    3) SMTP Auth Login Plain. Our mission is to login to our mailbox on the Exchange 2010 server. Issue the following SMTP command in telnet: Auth Login (Where Auth means authenticate). Naturally, you must know your mailbox name and its email address. This must be your email domain, not your Active Directory domain.
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    https://www.computerperformance.co.uk/exchange-2010/smtp-auth-login/

OAuth 2.0 Mechanism | Gmail IMAP | Google Developers

    https://developers.google.com/gmail/imap/xoauth2-protocol
    Feb 23, 2021 · This document defines the SASL XOAUTH2 mechanism for use with the IMAP AUTHENTICATE, POP AUTH, and SMTP AUTH commands. This mechanism allows the use of OAuth 2.0 Access Tokens to authenticate to a user's Gmail account. Using OAuth 2.0. Start by familiarizing yourself with Using OAuth 2.0 to Access Google APIs. That document explains …
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    https://developers.google.com/gmail/imap/xoauth2-protocol

Tutorial: SMTP Authentication

    https://www.fehcom.de/qmail/smtpauth.html
    February 19, 2022 - Regarding the SMTP client, it might ... some SMTP server use erroneously the authorization-id for authentication purpose and don't evaluate the authentication-id. Thus, for compatibility reasons and the lack of standardization, it seems advisible to use both values filled with the identical content of the userid. While for AUTH PLAIN and LOGIN clear user ...
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    https://www.fehcom.de/qmail/smtpauth.html

Sending Email with SMTP Authentication via Telnet or ...

    http://woshub.com/sending-email-via-telnet-using-smtp-authentication/
    The basic authentication methods PLAIN and LOGIN use BASE64 encoding of the name and password. The difference between them is that for the PLAIN method the login and password are sent in one line. And when using LOGIN, the login is sent first, then the password.
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    http://woshub.com/sending-email-via-telnet-using-smtp-authentication/

SMTP auth, mail-sending & open-relay tests using openssl

    https://easyengine.io/tutorials/mail/server/testing/smtp/
    December 18, 2020 - SMTP authentication, mail-sending and open-relay testing using telnet/openssl. Includes swaks utility and web-based alternatives.
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    https://easyengine.io/tutorials/mail/server/testing/smtp/

What Else You Should Know About SMTP Authentication | Mailtrap Blog

    https://blog.mailtrap.io/smtp-auth/
    July 15, 2020 - As a rule, servers use the three most common mechanisms: PLAIN, LOGIN, and CRAM-MD5. There are also other options that we’ll talk about later. Now, let’s take a look at authentication in action. After the SMTP handshake, the client sends the EHLO command to the server.
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    https://blog.mailtrap.io/smtp-auth/

AUTH PLAIN for SMTP is not working on all servers · Issue #4080 ...

    https://github.com/curl/curl/issues/4080
    June 26, 2019 - I did this curl smtp://smtp.world4you.com --user "username:password" -v --login-options AUTH=PLAIN Output: * Rebuilt URL to: smtp://smtp.world4you.com/ * Trying 81.19.149.200... * TCP_NOD...
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XGlobe - Test SMTP authentication with TELNET

    https://www.xglobe.com/knowledgebase/mail/test-smtp-authentication-with-telnet/
    A: 220-We do not authorize the use of this system to transport unsolicited, A: 220 and/or bulk e-mail. ... If you got here by passing the austhentication just continue the command in same session. ... A: 354 continue. finished with "\r\n.\r\n" ... Subject: Testing SMTP auth by telnet.
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    https://www.xglobe.com/knowledgebase/mail/test-smtp-authentication-with-telnet/

email - What is the most secured SMTP authentication type? - ...

    https://security.stackexchange.com/questions/146524/what-is-the-most-secured-smtp-authentication-type
    January 17, 2017 - None of these authentication types are really secure without TLS! ... They are all equally secure unless your TLS implementation is buggered. ... With SSL/TLS it's okay to use LOGIN / PLAIN. You should provide SMTP on top of an SSL-encrypted connection. While some schemes from your list (e.g.
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    https://security.stackexchange.com/questions/146524/what-is-the-most-secured-smtp-authentication-type

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