18 messages in net.sourceforge.lists.courier-usersRe: [courier-users] ESMTP_USE_STARTTL...| From | Sent On | Attachments |
|---|---|---|
| Matus UHLAR - fantomas | Aug 15, 2011 7:38 am | |
| Sam Varshavchik | Aug 15, 2011 12:02 pm | |
| Matus UHLAR - fantomas | Aug 16, 2011 12:07 am | |
| Matus UHLAR - fantomas | Oct 27, 2011 4:33 am | |
| Matus UHLAR - fantomas | Oct 27, 2011 4:45 am | |
| Alessandro Vesely | Oct 30, 2011 7:50 am | |
| Ben Kennedy | Oct 30, 2011 12:03 pm | |
| Alessandro Vesely | Oct 31, 2011 7:22 am | |
| Sam Varshavchik | Nov 3, 2011 5:47 pm | |
| Alessandro Vesely | Nov 4, 2011 3:53 am | |
| Matus UHLAR - fantomas | Nov 4, 2011 4:09 am | |
| Sam Varshavchik | Nov 4, 2011 5:25 am | |
| Sam Varshavchik | Nov 4, 2011 5:29 am | |
| Matus UHLAR - fantomas | Nov 4, 2011 5:45 am | |
| Sam Varshavchik | Nov 5, 2011 9:46 pm | |
| Alessandro Vesely | Nov 6, 2011 3:51 am | |
| Sam Varshavchik | Nov 6, 2011 4:16 am | |
| Matus UHLAR - fantomas | Nov 6, 2011 7:55 am |
| Subject: | Re: [courier-users] ESMTP_USE_STARTTLS error question | |
|---|---|---|
| From: | Matus UHLAR - fantomas (uhl...@fantomas.sk) | |
| Date: | Oct 27, 2011 4:33:47 am | |
| List: | net.sourceforge.lists.courier-users | |
On 15.08.11 15:02, Sam Varshavchik wrote:
Date: Mon, 15 Aug 2011 15:02:41 -0400 From: Sam Varshavchik <mrs...@courier-mta.com> To: cour...@lists.sourceforge.net Subject: Re: [courier-users] ESMTP_USE_STARTTLS error question
Matus UHLAR - fantomas writes:
What error does courieresmtp generate now, when it envounters STARTTLR error with SMTP server? Can I turn on fallback to plaintext SMTP, when courier encounters such error?
While I would like to use TLS where possible, I'm ok without it - we currently send all mail without TLS now :)
There are several possibilities. If the STARTTLS command itself fails, it's an SMTP error no difference then any other SMTP error, and will be either permanent or transient depending on its numerical code. If the STARTTLS command succeeds, but TLS negotiation fails, its a permanent error. But in either case there is really no fallback path.
For practical purposes TLS for SMTP is fundamentally broken. Many TLS servers simply use self-signed certs, making TLS fundamentally useless as means for effective encryption.
------------------------------------------------------------------------------ uberSVN's rich system and user administration capabilities and model configuration take the hassle out of deploying and managing Subversion and the tools developers use with it. Learn more about uberSVN and get a free download at: http://p.sf.net/sfu/wandisco-dev2dev
_______________________________________________ courier-users mailing list cour...@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
-- Matus UHLAR - fantomas, uhl...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. The 3 biggets disasters: Hiroshima 45, Tschernobyl 86, Windows 95
------------------------------------------------------------------------------ The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev
_______________________________________________ courier-users mailing list cour...@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users