Re: Should we use DKIM and SPF?

2014-05-01 Thread Zé Loff
On Thu, May 01, 2014 at 03:59:10AM +0200, Martin Braun wrote: > IMHO spam should be dealt with only on the client, not on the server. > It is not the task of the server to determine what is spam and what is > not. I know everyone does it, I used to do it too, but it is wrong. Server filtering save

Re: Should we use DKIM and SPF?

2014-04-30 Thread Martin Braun
> you can very easily tell what should or should not be flagged for review > with the most granular rules, anything with virus attachments should NEVER > get to the user, period, ever. Id rather have 100 false positives for > viruses than my network get turned into a zombie because I threw my users

Re: Should we use DKIM and SPF?

2014-04-30 Thread Barbier, Jason
forgot the list sorry, you can very easily tell what should or should not be flagged for review with the most granular rules, anything with virus attachments should NEVER get to the user, period, ever. Id rather have 100 false positives for viruses than my network get turned into a zombie because I

Re: Should we use DKIM and SPF?

2014-04-30 Thread Martin Braun
> In theroy that idea isnt even that great, and in practice a hygene server is > a better place to do the most course obvious spam. There is stuff that is > very obviously not wanted such as items coming from rouge servers that we > can prove thanks to SPF or Sender-ID being setup correctly. Valid

Re: Should we use DKIM and SPF?

2014-04-30 Thread Martin Braun
I agree, it's not simple, but none the less it is true. However I wouldn't waste time on reading or answering mail on my phone. If you receive really important email, and you need to answer such on the phone, you need to use a unique email just for such clients - making sure no spam reaches you at

Re: Should we use DKIM and SPF?

2014-04-30 Thread Barbier, Jason
In theroy that idea isnt even that great, and in practice a hygene server is a better place to do the most course obvious spam. There is stuff that is very obviously not wanted such as items coming from rouge servers that we can prove thanks to SPF or Sender-ID being setup correctly. There is no re

Re: Should we use DKIM and SPF?

2014-04-30 Thread Hugo Osvaldo Barrera
On 2014-05-01 03:59, Martin Braun wrote: > IMHO spam should be dealt with only on the client, not on the server. > It is not the task of the server to determine what is spam and what is > not. I know everyone does it, I used to do it too, but it is wrong. > What if I have multiple clients? Eg: de

Re: Should we use DKIM and SPF?

2014-04-30 Thread Martin Braun
IMHO spam should be dealt with only on the client, not on the server. It is not the task of the server to determine what is spam and what is not. I know everyone does it, I used to do it too, but it is wrong. 2014-04-26 16:26 GMT+02:00 Stéphane Guedon : > Le samedi 26 avril 2014 07:20:19, vous ave

Re: Should we use DKIM and SPF?

2014-04-26 Thread Barbier, Jason
there isnt a single one, but you have to do it somthing similar to what gilles did for dkim dkim. so you chose somthing like in my case I use amavisd since I never got spampd to work reliably listening on port 2000 listen on lo port 2001 tag clean accept tagged clean for deliver to mbox accept for

Re: Should we use DKIM and SPF?

2014-04-26 Thread Stéphane Guedon
Le samedi 26 avril 2014 07:51:42, vous avez écrit : > you want to use SPF at the very least, but then back it > with spampd or amavisd and run it though spamassassin > that is pretty much a standard stack right there, I tried to set it up yesterday. Complete failed ! I would really like to have s

Re: Should we use DKIM and SPF?

2014-04-26 Thread SM
Hi Stéphane, At 07:26 26-04-2014, Stéphane Guedon wrote: I am myself in need for a good antispam solution with opensmtpd. if dkim (which I don't use yet) and spf are not really working, what's the good way (I am already using spamd, not enough !) I assume that you are looking for software whic

Re: Should we use DKIM and SPF?

2014-04-26 Thread Barbier, Jason
you want to use SPF at the very least, but then back it with spampd or amavisd and run it though spamassassin that is pretty much a standard stack right there, On Sat, Apr 26, 2014 at 7:26 AM, Stéphane Guedon wrote: > Le samedi 26 avril 2014 07:20:19, vous avez écrit : > > Hi John, > > > > At 06

Re: Should we use DKIM and SPF?

2014-04-26 Thread Stéphane Guedon
Le samedi 26 avril 2014 07:20:19, vous avez écrit : > Hi John, > > At 06:04 26-04-2014, John Cox wrote: > >Unfortunately the whole point of SPF (unlike Sender-ID which works > >much better and on much the same principles) is that you can reject > >the message before receiving it so you wouldn't ha

Re: Should we use DKIM and SPF?

2014-04-26 Thread SM
Hi John, At 06:04 26-04-2014, John Cox wrote: Unfortunately the whole point of SPF (unlike Sender-ID which works much better and on much the same principles) is that you can reject the message before receiving it so you wouldn't have the DKIM stuff (which I think requires you to have the entire m

Re: Should we use DKIM and SPF?

2014-04-26 Thread Barbier, Jason
> > Unfortunately the whole point of SPF (unlike Sender-ID which works > much better and on much the same principles) is that you can reject > the message before receiving it so you wouldn't have the DKIM stuff > (which I think requires you to have the entire message? How about I try this again

Re: Should we use DKIM and SPF?

2014-04-26 Thread Craig R. Skinner
On 2014-04-26 Sat 14:04 PM |, John Cox wrote: > > Unfortunately the whole point of SPF (unlike Sender-ID which works > much better and on much the same principles) is that you can reject > the message before receiving it > That's the idea, but it is often abused by dumb hostmasters (e.g: google)

Re: Should we use DKIM and SPF?

2014-04-26 Thread John Cox
On Fri, 25 Apr 2014 06:55:48 -0700, you wrote: >On Thu, Apr 24, 2014 at 11:13 AM, Ashish SHUKLA wrote: > >> On Sat, 19 Apr 2014 08:26:59 +0200, Martin Braun >> said: >> > Hi >> >> > I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I >> > have previously run with those, but I am

Re: Should we use DKIM and SPF?

2014-04-25 Thread Barbier, Jason
On Thu, Apr 24, 2014 at 11:13 AM, Ashish SHUKLA wrote: > On Sat, 19 Apr 2014 08:26:59 +0200, Martin Braun > said: > > Hi > > > I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I > > have previously run with those, but I am in doubt. > > > I am thinking about the "worth" of those

Re: Should we use DKIM and SPF?

2014-04-25 Thread John Cox
Hi >On Sat, 19 Apr 2014 08:26:59 +0200, Martin Braun >said: >> Hi > >> I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I >> have previously run with those, but I am in doubt. > >> I am thinking about the "worth" of those technologies? > >> I used to think SPF was a good idea, b

Re: Should we use DKIM and SPF?

2014-04-24 Thread Ashish SHUKLA
On Sat, 19 Apr 2014 08:26:59 +0200, Martin Braun said: > Hi > I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I > have previously run with those, but I am in doubt. > I am thinking about the "worth" of those technologies? > I used to think SPF was a good idea, but SPF fails i

Re: Should we use DKIM and SPF?

2014-04-19 Thread Stéphane Guedon
Le samedi 19 avril 2014, 11:29:52 Craig R. Skinner a écrit : > On 2014-04-19 Sat 08:26 AM |, Martin Braun wrote: > > I was thinking about adding DKIM and SPF to my OpenSMTPD setup as > > I > > have previously run with those, but I am in doubt. > > > > I am thinking about the "worth" of those techn

Re: Should we use DKIM and SPF?

2014-04-19 Thread Craig R. Skinner
On 2014-04-19 Sat 08:26 AM |, Martin Braun wrote: > > I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I > have previously run with those, but I am in doubt. > > I am thinking about the "worth" of those technologies? > OK for sending, waste of time for receiving validation. SP

Re: Should we use DKIM and SPF?

2014-04-19 Thread Enric Morales
Hi Martin, On 19 Apr 2014 08:26, Martin Braun wrote: > And I don't know if DKIM signing is "really" necessary. >From my experience, most reputable mail sources already use DKIM and SPF. By implementing these into your setup, your mail will gain some extra points so as to get past spam filters in

Should we use DKIM and SPF?

2014-04-18 Thread Martin Braun
Hi I was thinking about adding DKIM and SPF to my OpenSMTPD setup as I have previously run with those, but I am in doubt. I am thinking about the "worth" of those technologies? I used to think SPF was a good idea, but SPF fails if someone forwards email to another server. Then the forwarding ser