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2015-01-05 Thread Koldo Navarro
Hello, I am sending this message after searching for a solution on the Internet. Unfortunately I haven't been able to find a valid way to deal with my problem. My question is about address rewriting in Postfix. I have a bunch of users using internal addresses (p.e. user@mydomain.local). Some of t

copying mail with non-local recipient

2015-01-05 Thread Wietse Venema
Koldo Navarro: > [using sender_bcc_maps] > user@mydomain.localregistry@mydomain.local > then I get copy of all emails, both internal and outgoing ones. But I don't > want to keep a copy of internal emails as there are too many of them, and I > wouldn't want to have to set filters in the mail cl

Re: copying mail with non-local recipient

2015-01-05 Thread Koldo Navarro
Hello, thanks for your answer, but copy depends only on sender. All outgoing emails must be copied, regardless the recipient. Greetings On 5 January 2015 at 14:16, Wietse Venema wrote: > Koldo Navarro: > > [using sender_bcc_maps] > > user@mydomain.localregistry@mydomain.local > > then I ge

Re: copying mail with non-local recipient

2015-01-05 Thread Wietse Venema
> Greetings Koldo Navarro: > thanks for your answer, but copy depends only on sender. All outgoing > emails must be copied, regardless the recipient. So it depends on sender *and* destination (you want to copy all remote mail from a specific sender). In that case, you need the second part of my r

TLS issues with old Exchange Servers

2015-01-05 Thread Matthias Schneider
Hello, I noticed that many Exchange Servers nowadays have problems with TLS. Is there a way to make a fallback to plain if there is a timeout on MAIL FROM? I currently use smtp_tls_security_level=may I found some 100's domains on different IPs which have this problems right now, here is a ex

Re: TLS issues with old Exchange Servers

2015-01-05 Thread Robert Schetterer
Am 05.01.2015 um 15:10 schrieb Matthias Schneider: > Hello, > > I noticed that many Exchange Servers nowadays have problems with TLS. Is > there a way to make a fallback to plain if there is a timeout on MAIL > FROM? I currently use smtp_tls_security_level=may > > I found some 100's domains on di

Re: TLS issues with old Exchange Servers

2015-01-05 Thread Viktor Dukhovni
On Mon, Jan 05, 2015 at 03:10:49PM +0100, Matthias Schneider wrote: > I noticed that many Exchange Servers nowadays have problems with TLS. Is > there a way to make a fallback to plain if there is a timeout on MAIL FROM? Postfix 2.12 (almost released, but for now 2.12-20141228 is the latest snaps

Re: using 521 responses instead of default 554 -- why NOT use them for all "known" spam?

2015-01-05 Thread Noel Jones
On 1/4/2015 5:43 PM, rogt3...@proinbox.com wrote: > My question is about usage. > > Is there a reason NOT to simply use the 521 hangup coes for ALL the spamhaus > hits from 127.0.0.2-11 ? It seems to me like all of those would be good > candidates. The 521 response code is a fairly recent inve

Re: using 521 responses instead of default 554 -- why NOT use them for all "known" spam?

2015-01-05 Thread Bill Cole
On 4 Jan 2015, at 18:43, rogt3...@proinbox.com wrote: Reading Postfix's docs re Disconnect suspicious SMTP clients http://www.postfix.org/STRESS_README.html#hangup in the example there it says "To hang up connections from blacklisted zombies, you can set specific Postfix SMTP server reject c

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 15:52, Viktor Dukhovni wrote: > On Mon, Jan 05, 2015 at 03:10:49PM +0100, Matthias Schneider wrote: > >> I noticed that many Exchange Servers nowadays have problems with TLS. Is >> there a way to make a fallback to plain if there is a timeout on MAIL FROM? > > Postfix 2.12 (a

Re: TLS issues with old Exchange Servers

2015-01-05 Thread Viktor Dukhovni
On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: > > With RC4-SHA early enough for the 11-year old Microsoft Exchange > > servers. > > Sadly, older Exchange servers (2003 at least) will favour 3DES over RC4 > for TLS connections, IIRC. This is not correct. > I don't have the fi

Re: TLS issues with old Exchange Servers

2015-01-05 Thread li...@rhsoft.net
Am 05.01.2015 um 18:47 schrieb Viktor Dukhovni: On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: With RC4-SHA early enough for the 11-year old Microsoft Exchange servers. Sadly, older Exchange servers (2003 at least) will favour 3DES over RC4 for TLS connections, IIRC. This

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 18:47, Viktor Dukhovni wrote: > On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: > >>> With RC4-SHA early enough for the 11-year old Microsoft Exchange >>> servers. >> >> Sadly, older Exchange servers (2003 at least) will favour 3DES over RC4 >> for TLS conne

Re: TLS issues with old Exchange Servers

2015-01-05 Thread Viktor Dukhovni
On Mon, Jan 05, 2015 at 06:59:06PM +0100, li...@rhsoft.net wrote: > >No, this is a bad idea, it is in fact 3DES that is broken with such servers > > Shouldn't we start to disable RC4 as well as DES-CBC3-SHA for that horrible > outdated crap servers and fallback to unencrypted at all instead conti

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 18:59, li...@rhsoft.net wrote: > Am 05.01.2015 um 18:47 schrieb Viktor Dukhovni: >> On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: >> With RC4-SHA early enough for the 11-year old Microsoft Exchange servers. >>> >>> Sadly, older Exchange servers (20

Re: TLS issues with old Exchange Servers

2015-01-05 Thread Per Thorsheim
Den 05.01.2015 18:59, skrev li...@rhsoft.net: > > Am 05.01.2015 um 18:47 schrieb Viktor Dukhovni: >> On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: >> With RC4-SHA early enough for the 11-year old Microsoft Exchange servers. >>> >>> Sadly, older Exchange servers (2003 a

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 19:18, Viktor Dukhovni wrote: > On Mon, Jan 05, 2015 at 06:59:06PM +0100, li...@rhsoft.net wrote: > >>> No, this is a bad idea, it is in fact 3DES that is broken with such servers >> >> Shouldn't we start to disable RC4 as well as DES-CBC3-SHA for that horrible >> outdated cr

Re: TLS issues with old Exchange Servers

2015-01-05 Thread li...@rhsoft.net
Am 05.01.2015 um 19:43 schrieb DTNX Postmaster: On 05 Jan 2015, at 19:18, Viktor Dukhovni wrote: On Mon, Jan 05, 2015 at 06:59:06PM +0100, li...@rhsoft.net wrote: No, this is a bad idea, it is in fact 3DES that is broken with such servers Shouldn't we start to disable RC4 as well as DES-CB

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 19:33, Per Thorsheim wrote: > Den 05.01.2015 18:59, skrev li...@rhsoft.net: >> >> Am 05.01.2015 um 18:47 schrieb Viktor Dukhovni: >>> On Mon, Jan 05, 2015 at 06:01:03PM +0100, DTNX Postmaster wrote: >>> > With RC4-SHA early enough for the 11-year old Microsoft Exchange >>

Re: TLS issues with old Exchange Servers

2015-01-05 Thread DTNX Postmaster
On 05 Jan 2015, at 19:51, li...@rhsoft.net wrote: >>> Gmail's outbound servers prefers RC4-SHA if offered by the SMTP >>> server, when Gmail drops RC4 support, these domains will finally >>> feel real pressure to either disable or fix their TLS stack. >> >> Gmail prefers ECDHE-RSA-AES256-SHA, and

Re: TLS issues with old Exchange Servers

2015-01-05 Thread li...@rhsoft.net
Am 05.01.2015 um 20:23 schrieb DTNX Postmaster: On 05 Jan 2015, at 19:51, li...@rhsoft.net wrote: Gmail's outbound servers prefers RC4-SHA if offered by the SMTP server, when Gmail drops RC4 support, these domains will finally feel real pressure to either disable or fix their TLS stack. Gmai

Re: copying mail with non-local recipient

2015-01-05 Thread Koldo Navarro
Yes... I didn't see it that way. I was more on Postfix to apply the bcc_maps rules based on the sender's external addresses. I had already tried some rules based on disregarding emails with local recipients, but there may be a mixture of local and external ones in the same email, and it didn't work