Re: how to refuse un-encrypted email

2015-06-07 Thread Bill Cole
On 7 Jun 2015, at 0:08, Chuck Peters wrote: Bill Cole said: On 3 Jun 2015, at 9:15, John Allen wrote: Is there any way of testing for and refusing un-encrypted email? The generic answer is "yes" but you need to define what you mean to pick a mechanism. If you mean email must be sent and re

Re: how to refuse un-encrypted email

2015-06-06 Thread Chuck Peters
Bill Cole said: > On 3 Jun 2015, at 9:15, John Allen wrote: > > >Is there any way of testing for and refusing un-encrypted email? > > The generic answer is "yes" but you need to define what you mean to > pick a mechanism. > > If you mean email must be sent and received over an encrypted > transp

Re: how to refuse un-encrypted email

2015-06-03 Thread Bill Cole
On 3 Jun 2015, at 10:49, James B. Byrne wrote: On Wed, June 3, 2015 10:41, Bill Cole wrote: Note that if you want maximal protection for both message metadata (headers and SMTP envelope) and content both in transit and after delivery, you have a very large problem space that has ultimately frus

Re: how to refuse un-encrypted email

2015-06-03 Thread James B. Byrne
On Wed, June 3, 2015 10:41, Bill Cole wrote: > Note that if you want maximal protection for both message metadata > (headers and SMTP envelope) and content both in transit and after > delivery, you have a very large problem space that has ultimately > frustrated some very smart people, including P

Re: how to refuse un-encrypted email

2015-06-03 Thread Bill Cole
On 3 Jun 2015, at 9:15, John Allen wrote: Is there any way of testing for and refusing un-encrypted email? The generic answer is "yes" but you need to define what you mean to pick a mechanism. If you mean email must be sent and received over an encrypted transport, e.g. TLS, it is simply a

Re: how to refuse un-encrypted email

2015-06-03 Thread Wietse Venema
John Allen: > > What level of encryption are you contextualizing? STARTTLS between > > SMTP peers; or the message itself using S/MIME or PGP/GPG; or > > something else? > > > The message itself (S/MIME or PGP/GPG). > Its a medical practice. They have sending under control, but they are > concerne

Re: how to refuse un-encrypted email

2015-06-03 Thread John Allen
On 2015-06-03 9:42 AM, James B. Byrne wrote: On Wed, June 3, 2015 09:15, John Allen wrote: Is there any way of testing for and refusing un-encrypted email? secondary, would it be possible to do this based upon the recipient. default would be encrypted, but email directed at some recipients may b

Re: how to refuse un-encrypted email

2015-06-03 Thread James B. Byrne
On Wed, June 3, 2015 09:15, John Allen wrote: > Is there any way of testing for and refusing un-encrypted email? > secondary, would it be possible to do this based upon the recipient. > default would be encrypted, but email directed at some recipients may > be > in plain text. > What level of enc

how to refuse un-encrypted email

2015-06-03 Thread John Allen
Is there any way of testing for and refusing un-encrypted email? secondary, would it be possible to do this based upon the recipient. default would be encrypted, but email directed at some recipients may be in plain text.