Re: OT? - Blocking attachments

2017-05-14 Thread Paolo Barbato
+1 > On 15 May 2017, at 06:32, Viktor Dukhovni wrote: > > >> On May 15, 2017, at 12:26 AM, Bill Cole >> wrote: >> >> If you want versatile, nuanced, precise, and accurate attachment handling, >> there is no >> better tool than MIMEDefang. > > The MIME normalizer I wrote in my early days as

Re: OT? - Blocking attachments

2017-05-14 Thread Viktor Dukhovni
> On May 15, 2017, at 12:26 AM, Bill Cole > wrote: > > If you want versatile, nuanced, precise, and accurate attachment handling, > there is no > better tool than MIMEDefang. The MIME normalizer I wrote in my early days as Morgan Stanley postmaster, just before Y2K New Years, was tasked with

Re: OT? - Blocking attachments

2017-05-14 Thread Bill Cole
On 14 May 2017, at 7:43, Kevin A. McGrail wrote: On 5/14/2017 7:22 AM, john wrote: This may not be a Postfix problem, but bearing in mind the recent events this forum may have some good ideas. After the recent rasomeware attacks we are considering the idea of blocking all attachments. I a

Re: OT? - Blocking attachments

2017-05-14 Thread Bastian Blank
On Sun, May 14, 2017 at 07:22:14AM -0400, john wrote: > This may not be a Postfix problem, but bearing in mind the recent > events this forum may have some good ideas. No, it isn't. > After the recent rasomeware attacks we are considering the idea of > blocking all attachments. I am not sure of

Re: OT? - Blocking attachments

2017-05-14 Thread Kevin A. McGrail
On 5/14/2017 7:22 AM, john wrote: This may not be a Postfix problem, but bearing in mind the recent events this forum may have some good ideas. After the recent rasomeware attacks we are considering the idea of blocking all attachments. I am not sure of the best way of doing this, but seve

Re: OT? - Blocking attachments

2017-05-14 Thread Michael Ströder
john wrote: > 1. block all email with attachments - a little too drastic for some as there > are legit > reasons for attachments. > block all email that is in any format that can hide executable code. IMO this won't work. > 2. rename attachments so that they will not/cannot be executed/

OT? - Blocking attachments

2017-05-14 Thread john
This may not be a Postfix problem, but bearing in mind the recent events this forum may have some good ideas. After the recent rasomeware attacks we are considering the idea of blocking all attachments. I am not sure of the best way of doing this, but several ideas have been put forward: 1.