Here in the most relevant information about 250-auth plain login. Easy sign in to your account using official 250-auth plain login pages provided below.

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

    https://www.samlogic.net/articles/smtp-commands-reference-auth.htm
    The AUTH Command 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.

postfix-sasl no "250-AUTH LOGIN PLAIN" mesage Howtoforge ...

    https://www.howtoforge.com/community/threads/postfix-sasl-no-250-auth-login-plain-mesage.58304/
    Aug 20, 2012 · 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN. Click to expand... is absence of these two lines is serious problem? in /var/mail.log even is messages like this: postfix/smtpd[5746]: connect from router[192.168.0.1] postfix/smtpd[5746]: setting up TLS connection from router[192.168.0.1]

What Else You Should Know About SMTP Authentication ...

    https://blog.mailtrap.io/smtp-auth/
    Aug 26, 2019 · S: 250 AUTH LOGIN PLAIN CRAM-MD5 C: AUTH LOGIN S: 334 DYT3jf4sdDR5 C: TXktVXNlcm5hbWU= S: 334 LIRdf2pekwW3 C: TXktUGFzc3dvcmQ= S: 235 Authentication successful CRAM-MD5 – the server requests the client to solve a computational challenge using the password.

"250-AUTH PLAIN LOGIN" instead of "250-AUTH LOGIN PLAIN ...

    https://www.howtoforge.com/community/threads/250-auth-plain-login-instead-of-250-auth-login-plain.23417/
    Jul 09, 2008 · "250-AUTH PLAIN LOGIN" instead of "250-AUTH LOGIN PLAIN" as is listed in the Howto. First question is, of course; Why did this happen / what caused this? Second question is; how will this affect my Postfix server's functionality or will it? I copied and pasted the commands into my SSH session, so I know the commands were typed verbatim.

How to check SMTP connection from Command Line ( Linux ...

    https://pepipost.com/tutorials/smtp-connection-from-command-line/
    Consequently, once you got 250 DSN you can start now your SMTP transaction now by using below command EHLO “i am here” EHLO i am here 250-smtpbny-lb2.pepipost.com 250-PIPELINING 250-SIZE 50000000 250-VRFY 250-ETRN 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN this will give you supported verbose.

Tutorial: SMTP Authentication

    https://www.fehcom.de/qmail/smtpauth.html
    The most common 'AUTH LOGIN' mechanism looks like this. S: 220 esmtp.example.com ESMTP C: ehlo client.example.com S: 250-esmtp.example.com S: 250-PIPELINING S: 250-8BITMIME S: 250-SIZE 255555555 S: 250 AUTH LOGIN PLAIN CRAM-MD5 C: auth login S: 334 VXNlcm5hbWU6 C: avlsdkfj S: 334 UGFzc3dvcmQ6 C: lkajsdfvlj S: 535 authentication failed (#5.7.1)

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

    https://easyengine.io/tutorials/mail/server/testing/smtp/
    250-test.rtcamp.com 250-pipelining 250-size 10240000 250-vrfy 250-etrn 250-starttls 250-auth plain login 250-enhancedstatuscodes 250-8bitmime 250 dsn If you do not see line like 250-AUTH ... line, then your server may not support authentication.

Testing SMTP Authentication using Telnet - Plusnet Community

    https://community.plus.net/t5/Library/Testing-SMTP-Authentication-using-Telnet/ba-p/1322433
    auth login You'll receive a response like this: 334 VXNlcm5hbWU6 You now need to enter your account username and password (the ones you use to log into our website), or mailbox identifier and its password (see above) but before you go ahead and do this you'll need to convert both the username and password into 'BASE64' format.

How to Test SMTP AUTH using Telnet - NDCHost

    https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet
    Jan 04, 2017 · EHLO exampledomain.com 250-server1.exampledomain.com Hello [1.1.1.2] 250-SIZE 52428800 250-PIPELINING 250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP AUTH LOGIN 334 VXNlcm5hbWU6 dXNlcm5hbWUuY29t 334 UGFzc3dvcmQ6 bXlwYXNzd29yZA== 235 …

Solved: SMTP auth always fails - Atlassian Community

    https://community.atlassian.com/t5/Jira-Questions/SMTP-auth-always-fails/qaq-p/433555
    In an earlier issue I found that the JRE that comes with Jira 6.3.3. is corrupt. In my instance it couldn't find the correct SSL certs. Now that that is fixed, I have a new follow-up problem: SMTP authentication always fails. I have 2 G-apps accounts, I tried both. On one I am a regular user, and fi...

I keep getting MAIL not accepted from server SMTP how to ...

    https://support.google.com/mail/thread/14273441?hl=en
    SMTP -> FROM SERVER: 250-smtp.gmail.com at your service, [195.201.172.39] 250-SIZE 35882577 250-8BITMIME 250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-CHUNKING 250 SMTPUTF8 SMTP -> FROM SERVER:530-5.5.1 Authentication Required.

Troubleshooting SMTP Auth Login Telnet Exchange Server ...

    https://www.computerperformance.co.uk/exchange-2010/smtp-auth-login/
    Dec 04, 2002 · 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.

Postfix Users - missing 250-AUTH LOGIN PLAIN after ehlo

    http://postfix.1071664.n5.nabble.com/missing-250-AUTH-LOGIN-PLAIN-after-ehlo-td5780.html
    Re: missing 250-AUTH LOGIN PLAIN after ehlo On Thu, 2010-03-11 at 10:56 -0500, Victor Duchovni wrote: telnet 127.0.0.1 25 so i restarted postfix daemons a tried again.. same result : ( mx1 funlife # /etc/init.d/postfix restart * Stopping postfix ...

dovecot - Postfix "AUTH-LOGIN" no longer being offered for ...

    https://serverfault.com/questions/463812/postfix-auth-login-no-longer-being-offered-for-smtp-auth-after-upgrade-from-ub
    250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN from EHLO output during a telnet session. Putting it in master.cf restored the output and intended behavior: submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt

Test SMTP with telnet or openssl • Steven Rombauts

    https://www.stevenrombauts.be/2018/12/test-smtp-with-telnet-or-openssl/
    Dec 11, 2018 · On most SMTP servers you will get a list of commands back when using the Extended Hello (EHLO) command:. 250-smtp.sendgrid.net 250-8BITMIME 250-PIPELINING 250-SIZE 31457280 250-AUTH PLAIN LOGIN 250 AUTH=PLAIN LOGIN. Authenticate yourself. Time to log in! The previous output listed the AUTH command and the available mechanisms. In this case PLAIN and LOGIN.. Using PLAIN

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

    https://security.stackexchange.com/questions/146524/what-is-the-most-secured-smtp-authentication-type
    $ openssl s_client -starttls smtp -connect smtp.gmail.com:587 ... 250 SMTPUTF8 EHLO foo 250-smtp.gmail.com at your service, [127.0.0.1] 250-SIZE 35882577 250-8BITMIME 250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH 250-ENHANCEDSTATUSCODES 250-PIPELINING ...

php - Gmail SMTP, CLIENT -> SERVER: AUTH XOAUTH2, SMTP ...

    https://stackoverflow.com/questions/49837553/gmail-smtp-client-server-auth-xoauth2-smtp-error-auth-command-failed-334
    2018-04-15 00:46:35 server -> client: 250-smtp.gmail.com at your service, [113.166.92.87]250-size 35882577250-8bitmime250-auth login plain xoauth2 plain-clienttoken oauthbearer xoauth250-enhancedstatuscodes250-pipelining250-chunking250 smtputf8

451 4.3.5 Server configuration error

    http://forum.centos-webpanel.com/index.php?topic=864.0
    Jun 11, 2019 · out: 250-auth plain login out: 250-auth=plain login out: 250-enhancedstatuscodes out: 250-8bitmime out: 250 dsn in: starttls out: 220 2.0.0 ready to start tls in: ehlo ehlo external_server_here out: 250-centoswebpanelbased_server_here out: 250-pipelining out: 250-size 204800000 out: 250-etrn out: 250-auth plain login out: 250-auth=plain login

Which SMTP Port Should I Use? Understanding Ports 25, 465 ...

    https://www.mailgun.com/blog/which-smtp-port-understanding-ports-25-465-587/
    8 250-AUTH PLAIN LOGIN . 9 250-SIZE 52428800 . 10 250-8BITMIME . 11 250-ENHANCEDSTATUSCODES . 12 250 STARTTLS . You can test using the same command sequence on any SMTP server. Try Gmail or Yahoo, "telnet gmail-smtp-in.l.google.com 25" or "telnet mta7.am0.yahoodns.net 25".

How To Disable AUTH PLAIN Login When Using SSL/TLS For SMTP?

    https://support.oracle.com/knowledge/More%20Applications%20and%20Technologies/1447818_1.html
    250-AUTH PLAIN LOGIN 250-AUTH=LOGIN PLAIN 250-ETRN 250-NO-SOLICITING 250 SIZE 0. Solution. Sign In: To view full details, sign in with your My Oracle Support account. Register: Don't have a My Oracle Support account? Click to get started! In this Document. Goal: Solution: References:

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

    https://github.com/curl/curl/issues/4080
    Jun 26, 2019 · > AUTH PLAIN ***base64encoded username/password here*** < 235 Authentication succeeded Further information. AUTH LOGIN works fine. AUTH PLAIN with GMail works fine aswell. If you need credentials for the mentioned mail server i can provide some. Using Telnet and manually sending the commands with AUTH PLAIN works as intended.

telnetで学ぶSMTP AUTH - うまいぼうぶろぐ

    https://hogem.hatenablog.com/entry/20100121/1264179124
    「250-auth=plain login digest-md5 cram-md5」は、 broken_sasl_auth_clientsで Outlook 、 Outlook Express で 使用するように設定にした場合に表示されます。

Google XOAUTH2 authentication fails · Issue #543 ...

    https://github.com/PHPMailer/PHPMailer/issues/543
    I've checked every parameter once again then tried to send a message. Now the debugger says this: 2015-10-27 12:19:26 SERVER -> CLIENT: 220 smtp.gmail.com ESMTP v83sm5982905qkv.1 - gsmtp 2015-10-27 12:19:26 CLIENT -> SERVER: EHLO test.com 2015-10-27 12:19:26 SERVER -> CLIENT: 250-smtp.gmail.com at your service, [85.25.210.226] 250-SIZE 35882577 250-8BITMIME 250 …

Solved: Gmail settings are not working in mail server cruc...

    https://community.atlassian.com/t5/Fisheye-Crucible-questions/Gmail-settings-are-not-working-in-mail-server-crucible/qaq-p/125066
    250-auth login plain xoauth2 plain-clienttoken oauthbearer xoauth. 250-enhancedstatuscodes. 250-pipelining. 250-chunking. 250 smtputf8. debug smtp: found extension "size", arg "35882577" debug smtp: found extension "8bitmime", arg ""

AUTH CRAM-MD5 - Susam Pal

    https://susam.in/blog/auth-cram-md5/
    Connected to susam.in. Escape character is '^]'. 220 tesseract.susam.in ESMTP Exim 4.72 Mon, 07 Nov 2011 20:27:56 +0530 EHLO nifty.localdomain 250-tesseract.susam.in Hello nifty.localdomain [122.167.80.194] 250-SIZE 52428800 250-PIPELINING 250-AUTH PLAIN LOGIN CRAM-MD5 250-STARTTLS 250 HELP AUTH PLAIN AGFsaWNlAHdvbmRlcmxhbmQ= 235 Authentication ...

CRAM-MD5 authentication online generator - busylog.net

    https://busylog.net/cram-md5-online-generator/
    Challenge: The server sends a base64-encoded string to the client.Before encoding, it could be any random string, but the standard that currently defines CRAM-MD5 says that it is in the format of a Message-ID email header value (including angle brackets) and includes an arbitrary string of random digits, a timestamp, and the server’s fully qualified domain name.

Common JavaMail SMTP Errors- JavaMail API Pepipost

    https://pepipost.com/tutorials/common-javamail-smtp-errors/
    DEBUG: setDebug: JavaMail version 1.4.4 Sending msg DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc] DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: trying to connect to host "smtp.pepipost.com", port 587, isSSL false 220 ESMTP ...

Office365 SMTP Connection Fails WordPress.org

    https://wordpress.org/support/topic/office365-smtp-connection-fails/
    Apr 04, 2018 · 250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP 2018-04-04 07:43:48 CLIENT -> SERVER: STARTTLS 2018-04-04 07:43:48 SERVER -> CLIENT: 220 TLS go ahead 2018-04-04 07:43:48 SMTP Error: Could not connect to SMTP host. 2018-04-04 07:43:48 CLIENT -> SERVER: QUIT 2018-04-04 07:43:48 SERVER -> CLIENT: 221 vm.xava-clients.ie closing connection

How to perform AUTH DIGEST-MD5 CRAM-MD5 command line …

    https://linuxconfig.org/how-to-perform-auth-digest-md5-cram-md5-command-line-smtp-authentication
    Sep 25, 2015 · EHLO testing 250-mail.localhost.localdomain 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-c 250-AUTH=DIGEST-MD5 CRAM-MD5 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN From the above output we can see that the server is capable of AUTH DIGEST-MD5 CRAM-MD5 login authentication.

How to verify plain text logins are disabled cPanel Forums

    https://forums.cpanel.net/threads/how-to-verify-plain-text-logins-are-disabled.605543/
    Jul 20, 2017 · Escape character is '^]'. 220 franklin.example.com ehlo testing 250-franklin.example.com Hello testing [127.0.0.1] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP

centos - Telling sendmail to auth? - Server Fault

    https://serverfault.com/questions/360289/telling-sendmail-to-auth
    Connecting to in6.mailjet.com. via relay... 220 in6.mailjet.com ESMTP Mailjet >>> EHLO mydomain.com 250-in6.mailjet.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN DIGEST-MD5 CRAM-MD5 250-AUTH=PLAIN LOGIN DIGEST-MD5 CRAM-MD5 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN >>> STARTTLS 220 2.0.0 Ready to ...

250-AUTH LOGIN PLAIN & 250-AUTH=LOGIN PLAIN - Postfix

    http://postfix.1071664.n5.nabble.com/250-AUTH-LOGIN-PLAIN-amp-250-AUTH-LOGIN-PLAIN-td59078.html
    re: 250-auth login plain & 250-auth=login plain Hi, > But i don't see two following lines in above: > 250-AUTH LOGIN PLAIN > 250-AUTH=LOGIN PLAIN have you upgraded Postfix to 2.10 recently? In this case, you might have missed the smtpd_relay_restrictions change pointed out in the release notes [1]:

Mail: Connect TLS encrypted to a smtp server by telnet

    https://michlstechblog.info/blog/mail-connect-tls-encrypted-to-a-smtp-server-by-telnet/
    [email protected] ~ # openssl s_client -connect smtp.yourdomain.org:25 -starttls smtp -no_ssl3 250-smtp.yourdomain.org greets 10.254.1.54 250-PIPELINING 250-8BITMIME 250-DELIVERBY 250-SIZE 104857600 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN PLAIN 250-BURL imap 250-CHUNKING 250 HELP EHLO michael AUTH LOGIN 334 VXNlcm5hbWU6

SMTP Error: Could not authenticate. [#3114989] Drupal.org

    https://www.drupal.org/project/smtp/issues/3114989
    Feb 20, 2020 · 2020-05-15 19:41:47 Auth methods available on the server: PLAIN,LOGIN 2020-05-15 19:41:47 Requested auth method not available: 2020-05-15 19:41:47 Auth method selected: LOGIN

Simple Troubleshooting For SMTP Via Telnet And Openssl ...

    https://wiki.zimbra.com/wiki/Simple_Troubleshooting_For_SMTP_Via_Telnet_And_Openssl
    Escape character is '^]'. 220 zcs723.EXAMPLE.com ESMTP Postfix helo myworkstation 250 zcs723.EXAMPLE.com ehlo myworkstation 250-zcs723.EXAMPLE.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN AUTH PLAIN ...

Postfix with SMTP-AUTH and TLS - VMadmin.co.uk

    https://www.vmadmin.co.uk/linux/44-redhat/146-linuxpostfix
    250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN quit 221 2.0.0 Bye Connection closed by foreign host. If the below is in the statement returned by the server then TLS and PLAIN/LOGIN logins are configured correctly: 250-STARTTLS 250-AUTH PLAIN LOGIN. 17. Check firewall rules allow port 25 /sbin/iptables -nvL

NS.tools: BRE-EUROPE.LU - Check DNS, MX and whois test ...

    https://ns.tools/bre-europe.lu
    250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP QUIT 221 Service closing transmission channel [ScXuuLxyN1-FGOJ9KEPvDw.uk96] Name eu-smtp-inbound-1.mimecast.com IP 91.220.42.241 Banner 220 eu-smtp-1.mimecast.com ESMTP; Tue, 16 Jun 2020 12:04:35 +0100 Starttls yes Dane no Mail size 0 Bytes Expn no Vrfy no

Send a RFC 5322 compliant email using telnet · GitHub

    https://gist.github.com/floudet/75f3e089fd400c06abfc491b8098d158

Setup Postfix with SMTP-AUTH and TLS on CentOS ...

    https://blog.tinned-software.net/setup-postfix-with-smtp-auth-and-tls-on-centos/
    S: 220 host.example.com ESMTP Postfix C: EHLO test S: 250-host.example.com S: 250-PIPELINING S: 250-SIZE 10240000 S: 250-VRFY S: 250-ETRN S: 250-STARTTLS S: 250-AUTH PLAIN LOGIN S: 250-AUTH=PLAIN LOGIN S: 250-ENHANCEDSTATUSCODES S: 250-8BITMIME S: 250 DSN C: MAIL FROM: <[email protected]> S: 250 2.1.0 Ok C: RCPT TO: <[email protected] ...

Configuring SMTP AUTH and TLS in Postfix

    https://wpollock.com/AUnixSec/SmtpAuth.htm
    Escape character is '^]'. 220 whoopie.gcaw.org ESMTP Postfix EHLO localhost 250-whoopie.gcaw.org 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250 8BITMIME auth plain YXVzZXIAYXVzZXIAc2VjcmV0 235 Authentication successful quit 221 Bye Connection closed by foreign host.

SMTP authentication for outgoing emails via a Linux based ...

    https://answers.microsoft.com/en-us/mobiledevices/forum/all/smtp-authentication-for-outgoing-emails-via-a/2132a705-e1d0-401d-9883-f22f7ed2cb6a
    250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN If the Windows 8 client doesn't see an AUTH line containing LOGIN it will drop the connection and leave the mail in the outgoing folder. Once the LOGIN is enabled people will see that mails long forgotten in the the outbox suddenly goes through.

Testing Mail Servers - GitHub Pages

    https://thejimmyg.github.io/goodingredients/recipe/articles/email3/smtp-testing.html
    220 plpb.example.com ESMTP Postfix (Debian/GNU) ehlo plpb.example.com 250-plpb.example.com 250-PIPELINING 250-SIZE 30720000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from:<[email protected]> 250 2.1.0 Ok rcpt to:<[email protected]> 250 2.1.5 Ok data 354 …

Set up a Postfix Mail Server With Dovecot and Squirrelmail ...

    https://www.ionos.com/community/email-office/email/set-up-a-postfix-mail-server-with-dovecot-and-squirrelmail-on-ubuntu-1604/
    250-localhost.localdomain 250-pipelining 250-size 10240000 250-vrfy 250-etrn 250-starttls 250-auth plain login 250-auth=plain login 250-enhancedstatuscodes 250-8bitmime 250 dsn The following lines indicate that SMTP AUTH is working:

Why can't I send email in my Windows Live Mail ...

    https://answers.microsoft.com/en-us/windows/forum/windows_7-networking/why-cant-i-send-email-in-my-windows-live-mail/10c3679e-eafe-40c8-9a2b-0e8764371634
    The server does not support a SSL connection.... Secure(SSL): Yes. Right-click on the account name and select Properties.On the Advanced tab, deselect This server requires a secure connection (SSL).On the Servers tab, ensure that Log on using clear text authentication is selected.. When you've made the correction, close down WLMail and wait a few minutes before relaunching and testing.

email - test - telnet smtp.gmail.com 465 connect failed ...

    https://code-examples.net/en/q/a88cf7
    For educational purposes, I need to send an email through an SMTP server, using SMTP's fundamental and simple rules. I was able to do that using smtp4dev.I telnet localhost 25 and and commands are:. I want to do the same thing, using Gmail SMTP server.

What is StartTLS and how can it be tested? - IONOS

    https://www.ionos.com/digitalguide/e-mail/technical-matters/starttls/
    $ openssl s_client -host mail.test.server-port 25 -starttls smtp CONNECTED(00000003) [...] 250 HELP ehlo test 250-Mailserver Hello oneandone [10.1.2.73] 250-SIZE 52428800 250-PIPELINING 250-AUTH PLAIN LOGIN 250 HELP

SMTP AUTH for sendmail 8.10: Realms and Examples

    http://www.sendmail.org/~ca/email/authrealms.html
    Realms and PLAIN/LOGIN As it can see from the list of possible pwcheck_methods, some of them support realms for PLAIN/LOGIN while others don't. This requires either a patch for lib/checkpw.c (applies to 1.5.15, at least integrated since 1.5.20) or the client to add @HOST.DOMAIN to the authid.

How to test SMTP Authentication and StartTLS - Sysadmins ...

    https://www.saotn.org/test-smtp-authentication-starttls/
    May 17, 2014 · Before you can test the SMTP AUTH PLAIN authentication over TLS, you need to create log-in information. The log-in information is your usename (email address) and password, and a special character \0. Normally this is an email address and its password. To create the combination – which has to be base64 encoded – you can use Perl:

250-auth Plain Login Guide & Useful Tips

  • To reach 250-auth plain login page use the official links provided above;
  • Then, use your 250-auth plain login account and password to sign in;
  • If you do not have an account, please create it;
  • If any errors appear, please contact online support.

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