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https://www.howtoforge.com/community/threads/smtp-auth-failure-server-does-not-support-secure-authentication.6738/
Sep 12, 2006 · SMTP AUTH Failure: "Server Does Not Support Secure Authentication" Discussion in ' HOWTO-Related Questions ' started by jjw , Sep 8, 2006 . Page 1 of 2 1 2 Next >
http://xmodulo.com/enable-user-authentication-postfix-smtp-server-sasl.html
Jan 28, 2014 · With SASL enabled, Postfix will not accept any incoming SMTP connections without proper authentication. As smart spammer can imitate a legitimate email account, no SMTP from even internal users are accepted without authentication. This tutorial will focus on setting up a Postfix SMTP server to use Dovecot SASL for user authentication. As ...
https://forum.iredmail.org/topic3755-iredmail-support-problem-with-roundcube-when-tls-in-postfix-is-turned-on.html
Aug 03, 2012 · Problem with roundcube when TLS in postfix is turned on (Page 1) — iRedMail Support — iRedMail — Works on Red Hat Enterprise Linux, CentOS, Debian, Ubuntu, FreeBSD, OpenBSD
https://lists.debian.org/debian-user/2013/02/msg00245.html
Hello ! I try sent a email via web, come this errors. I searched for many sites, but i not found I have postfix, cyrus and LDAP included. # When sent mail for firefox Auhentication failure [SMTP: SMTP server does not support authentication (code: 250, response: def.com PIPELINING SIZE 20971520 VRFY ETRN ENHANCEDS #Logs Cyrus.
https://groups.google.com/d/topic/linux.debian.user/gtQYDvl9dGw
SMTP server does not support authentication Showing 1-7 of 7 messages. ... Via Google search for "postfix authentication": ... > What I said was the server doesn't accept authentication. And yes, I > have seen many servers which don't allow it from trusted sources. They
http://forums.mozillazine.org/viewtopic.php?f=28&t=1858105
Apr 19, 2010 · It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider." Because I had deleted and set up the account again, I immediately suspected that I had an option set up that the ISP couldn't handle.
http://www.postfix.org/SASL_README.html
The Postfix SMTP client does not support the obsolete "wrappermode" protocol, which uses TCP port 465 on the SMTP server. See TLS_README for a solution that uses the stunnel command. With the smtp_sasl_password_maps parameter, we configure the Postfix SMTP client to send username and password information to the mail gateway server.
http://www.postfix.org/TLS_README.html
When the Postfix SMTP server does not save TLS sessions to an external cache database, client-side session caching is unlikely to be useful. To reduce waste of client resources, the Postfix SMTP server can be configured to not issue TLS session ids. By default …
https://bbs.archlinux.org/viewtopic.php?id=111392
Jan 12, 2011 · I'm having a problem with Postfix sending email. To be more specific, Postfix sends mail perfect but when my web server running webmail (RoundCube) connects to my mail server to send email, it fails & there is nothing in the logs that explain to me why:
https://blog.tinned-software.net/setup-postfix-with-smtp-auth-and-tls-on-centos/
# # TLS configuration # # With this, the Postfix SMTP server announces STARTTLS support to remote SMTP # clients, but does not require that clients use TLS encryption. smtpd_use_tls = yes smtpd_tls_security_level = may # Configures the server certificate file and key file as well as the CA's # intermediate certificate file.
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