Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-07-01 Thread Michelle Sullivan
Brandon Long wrote: On Tue, Jun 30, 2015 at 8:12 AM, Hugo Slabbert hslabb...@stargate.ca mailto:hslabb...@stargate.ca wrote: On Tue 2015-Jun-30 01:04:48 +0200, Michelle Sullivan miche...@sorbs.net mailto:miche...@sorbs.net wrote: That said, so far today, only 0.015% of

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-07-01 Thread Michelle Sullivan
Hugo Slabbert wrote: On Tue 2015-Jun-30 01:04:48 +0200, Michelle Sullivan miche...@sorbs.net wrote: That said, so far today, only 0.015% of our outbound messages that were over an encrypted link were using SSLv3. At our volume, that's not nothing, unfortunately, but it's a pretty small

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-30 Thread Hugo Slabbert
On Tue 2015-Jun-30 01:04:48 +0200, Michelle Sullivan miche...@sorbs.net wrote: That said, so far today, only 0.015% of our outbound messages that were over an encrypted link were using SSLv3. At our volume, that's not nothing, unfortunately, but it's a pretty small amount to allow to

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-29 Thread Brandon Long
On Mon, Jun 29, 2015 at 1:48 PM, Michelle Sullivan miche...@sorbs.net wrote: Brandon Long wrote: On Fri, Jun 26, 2015 at 7:03 PM, Michelle Sullivan miche...@sorbs.net mailto:miche...@sorbs.net wrote: Sure SMTP can have the lowest common denominator, but I thought the

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-29 Thread Michelle Sullivan
Brandon Long wrote: On Mon, Jun 29, 2015 at 1:48 PM, Michelle Sullivan miche...@sorbs.net mailto:miche...@sorbs.net wrote: Thoughts/comments welcome. Sure, there's a bit of political or privacy argument involved here, that some people think why does this need to be encrypted. There

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-29 Thread tqr2813d376cjozqap1l
29. Jun 2015 23:04 by miche...@sorbs.net: Brandon Long wrote: Inbound is 0.1% at SSLv3, 37% at TLSv1. So +60% is unencrypted inbound... because it has to be or because it is not forced otherwise... that is the burning question. You policy Encrypted or nothing and it'll be interesting how

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-26 Thread Brandon Long
I've considered an opposite DANE, where a server can know whether to refuse an unencrypted connection. One could imagine an extension to spf for example saying that only encrypted connections from these ips are to be considered authed, or just abusing spf as for encryption required as well. Spf

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-26 Thread tqr2813d376cjozqap1l
27. Jun 2015 02:03 by miche...@sorbs.net: 2/ You want to ensure credentials for SMTP-AUTH are not compromised you SSL3/TLS/TLSv1.2,DH=4096 the connection No SSLv3, please! http://disablessl3.com ___ mailop mailing list mailop@mailop.org

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-26 Thread Brandon Long
On Fri, Jun 26, 2015 at 11:53 AM, Carl Byington c...@five-ten-sg.com wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Thu, 2015-06-25 at 13:25 -0700, Brandon Long wrote: We haven't implemented it yet, though we expect to in the near future. Does this mean that google will then

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-24 Thread Carl Byington
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Thu, 2015-06-25 at 00:09 +0100, Brandon Long wrote: Not in front of a computer to check if we see failures like this, but we (google) stopped falling back to unencrypted connections 2y ago. This had an impact on a small number of misconfigured

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-23 Thread Johann Klasek
On Sat, Jun 20, 2015 at 11:33:00AM -0500, Frank Bulk wrote: http://www.circleid.com/posts/20150620_logjam_openssl_and_email_deliverabili ty/ FYI, just a heads up. OpenSSL now rejects handshakes using DH parameters shorter than 768 bits as a countermeasure against the Logjam attack

Re: [mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-23 Thread Phil Pennock
On 2015-06-23 at 16:35 +0200, Johann Klasek wrote: On Sat, Jun 20, 2015 at 11:33:00AM -0500, Frank Bulk wrote: http://www.circleid.com/posts/20150620_logjam_openssl_and_email_deliverabili ty/ FYI, just a heads up. OpenSSL now rejects handshakes using DH parameters shorter than 768

[mailop] Blog: Logjam, Openssl and Email Deliverability

2015-06-20 Thread Frank Bulk
http://www.circleid.com/posts/20150620_logjam_openssl_and_email_deliverabili ty/ FYI, just a heads up. Frank ___ mailop mailing list mailop@mailop.org http://chilli.nosignal.org/mailman/listinfo/mailop