NLY supposed to be used for initial submission
and should be restricted to authenticated clients, this should not be a
problem.
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it feels like this message should go to stdout, or
> that there should be a command-line option to suppress non-error messages.
It is really more useful to think of stderr as diagnostic output or meta-output
rather than strictly errors.
--
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__
r/local/share/doc/postfix/MAILLOG_README
/usr/local/share/doc/postfix/MAILLOG_README.html
Your paths may vary.
--
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Not Cur
ious means is a good way to get
widely blocked.
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It may be helpful to understand that they actually
segregate their outbound "junk" (likely spam and asynchronous bounces)
to a subset of their outbound machines, so if you identify that pattern
you can limit the scope of your match to just the "good" output points.
--
ser 'foo'
> and 'password')
That's helpful because they won't need to change the domain part of their
account name, which they would if they were using u...@example.com.
--
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ist breaks any DKIM signature applied by the
sender. So do MOST mailing lists.
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Pos
es, can we make Postscreen dnsbl_sites lookup
bind IP for lookups?
No, it is not about the names associated with your machines, it is about
how you are handling DNS.
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addres
tting username password error
Dovecot has a setting for the minimum UID for a user specifically to prevent
email access for root and other system role accounts. Typically one would
redirect root mail with an alias to some real user.
--
Bill Cole
___
Postfix
you need BOTH Postfix and Dovecot. For that sort of system
one could theoretically have either one handling 587, but Postfix is most
common for submission on port 587 simply because that is less complex than
setting up submission for Dovecot if you've already got Postfix running.
On 2025-01-02 at 16:47:00 UTC-0500 (Thu, 02 Jan 2025 16:47:00 -0500)
Greg Klanderman via Postfix-users
is rumored to have said:
On January 2, 2025 Bill Cole via Postfix-users
wrote:
[lots of snipping done ...]
Is there any good reason to send ehlo multiple times?
It is always correct
does ehlo/starttls/ehlo/quit may only be noticing a message size limit
in the EHLO reply and giving up on an oversize message, i.e. doing the
right thing.
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No
On 2024-12-24 at 19:27:29 UTC-0500 (Tue, 24 Dec 2024 19:27:29 -0500
(EST))
Wietse Venema via Postfix-users
is rumored to have said:
Bill Cole via Postfix-users:
[...]
There's nothing technically wrong here, at least not that is
diagnosable
from your end. MS just does strange things.
The command summary in the disconnect message explains what happened.
The client connected successfully with starttls and issued a normal quit
command.
There's nothing technically wrong here, at least not that is diagnosable
from your end. MS just does strange things.
--
Bill C
On 2024-12-18 at 12:51:19 UTC-0500 (Wed, 18 Dec 2024 18:51:19 +0100)
Benny Pedersen via Postfix-users
is rumored to have said:
Bill Cole via Postfix-users skrev den 2024-12-18 18:36:
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo@toad.social and many
On 2024-12-18 at 11:50:26 UTC-0500 (Wed, 18 Dec 2024 16:50:26 +)
Chris Green via Postfix-users
is rumored to have said:
On Wed, Dec 18, 2024 at 10:04:49AM -0500, Bill Cole via Postfix-users
wrote:
[snip]
The most common DNS problem I see with mail systems is an
inadequate
DNS
nized as a best practice for 20+ years. If you choose
to do something else, you are very much alone in figuring out a way to
make it work. Most of us abandoned that model long ago and don't
consider it worth trying to revive.
--
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ly not been
directly and obviously useful to many senders. That is changing somewhat
now with GMail and MS365 both explicitly requiring proper deployment.
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Not Cur
n
my first mail.
If you're up to date with Postfix, you probably do not need to list
anything in smtpd_tls_exclude_ciphers.
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Not Currently Availabl
&usg=AOvVaw3-avte1ZFDupDEI4r7shA1
https://blog.qualys.com/product-tech/2011/10/17/mitigating-the-beast-attack-on-tls#comment-8481
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on 587, you need a Dovecot answer.
This is not the Dovecot mailing list.
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ly best to ask that question of the Dovecot community...
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de:xyz.net -all" as part or all of the
record.
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standard behavior in 8.14.x.
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To
nd config data, use a pastebin-like site.
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etection system.
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x/doc/Mail_SpamAssassin_Plugin_TxRep.html.)
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s, the operators of those
gTLDs created their own bad situation: full of spammers and without good
tools for thwarting them.
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addr
install is
/Applications/Server.app/Contents/ServerRoot/usr/sbin/postconf.
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(!) and they keep Postfix and related mail tools current and
functional.
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ne for your IPv4 address and one for IPv6
address. Very likely Gandi will need to do that for you, if they
support custom rDNS at all, and if they do not, you should not try
sending mail from their hosting.
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lo_name, which by default
is set equal to $myhostname.
It is not possible to say for sure what changed to make this happen, as
it could be entirely internal to Gandi.
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ransport and/or milter
and/or content_filter configuration is causing the ongoing breakage...
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__
or one sysadmin with k8s expertise to build a working
Postfix container for their own use. I'm sure that it has taken more
time than just building up a standalone VM with a working Postfix
deployment.
--
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(AKA @grumpybozo@toad.social and
server to a general-purpose remote resolver is unsafe for an MTA
that uses public reputation services such as DNSBLs and URIBLs.
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addresses)
Not Currently Availabl
On 2024-10-16 at 09:52:43 UTC-0400 (Wed, 16 Oct 2024 14:52:43 +0100)
Dominic Preston via Postfix-users
is rumored to have said:
On Wed, 16 Oct 2024 at 14:30, Bill Cole via Postfix-users <
postfix-users@postfix.org> wrote:
[]
However, multi-second delays at connect time are per
c/nsswitch.conf)
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node) but
they are quite different from Docker containers and are almost
indistinguishable internally from an installation on bare metal.
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addresses)
Not Cur
On 2024-10-15 at 13:02:02 UTC-0400 (Tue, 15 Oct 2024 17:02:02 +)
Serhii via Postfix-users
is rumored to have said:
On 10/15/24 16:52, Bill Cole via Postfix-users wrote:
Unless you've intentionally enabled EXPN in your config, you probably
have not done anything really wrong but no
cluding NOT enabling EXPN or VRFY, disabling AUTH on port 25,
requiring AUTH on ports 465 and 587 (but only WITH TLS,) and NOT
supporting wildcard delivery.
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be used to send meaningful
signals.
A better approach would be to have an automated email reply to the
messages in question.
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Not Currently Ava
e.) How this is done is all described in the
documentation.
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t be possible...
For the time being I have only left tagging the addheader header
itself and I leave it on the mail client side (e.g. label)
Is there another way ?
Or is it such a stupid idea that it is worth abandoning?
--
___
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onsequences of false negative spam tests are very low
(i.e. the users are sharp and paranoid,) and you have some basic
research goal behind seeing every message.
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Not
tting our
contributor mailstreams. I don't believe we list any country code TLDs
on principle.
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s. I can't even conceive of a reason to have
multiple versions of Postfix installed, so why would it need versioned
subdirectories anywhere?
i.e.: it must be Gentoo.
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addre
om" is entirely unsurprising. Many Postfix servers handle submission
for many different domains.
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addresses)
Not Currentl
On 2024-08-10 at 19:48:18 UTC-0400 (Sun, 11 Aug 2024 01:48:18 +0200)
christian via Postfix-users
is rumored to have said:
Am 10.08.2024 um 22:14 schrieb Bill Cole via Postfix-users:
This is caused by a misconfiguration of the account or the entire
domain in MS365. It can only be fixed on the
can only be fixed on the Microsoft side.
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milters during the rcpt-to stage?
smtpd_delay_open_until_valid_rcpt = no
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greatly.
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ligation to protect the identity of spammers or the
resources they use. If anything, it is better for us all if you name
them precisely.
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s going wrong as you've replaced domain names in
your description with garbage and not supplied logs or spam samples
which would explain where you got the domains you're actually using to
filter. All I can do is shrug and say "I guess you di
nstall but not not
test as root, however this may not be wise on distros that do
substantial customization of SA. (i.e. Debian-based)
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n every message.
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On 2024-07-22 at 12:16:26 UTC-0400 (Mon, 22 Jul 2024 11:16:26 -0500)
Chris Wopat via Postfix-users
is rumored to have said:
> On Mon, Jul 22, 2024 at 10:45 AM Bill Cole via Postfix-users
> wrote:
>> Yes. Anything in master.cf after a "-o" is just a service-specifi
l, it's almost universal for people to use permit_mynetworks.
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ibe send an email to postfix-users-le...@postfix.org
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27; defaults. For example, a
packager for a system that includes OpenSSL in the base may rebuild
Postfix with opportunistic TLS by default.
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Not Cur
That overrides anything
else telling Postfix where to deliver.
As always this is largely a guess because you have not included your
config. The output of 'postconf -nf' would help eliminate uncertainties.
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day, but I would not want to see how it handles a
de facto doubling of deliveries for millions.
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On 2024-07-12 at 04:55:08 UTC-0400 (Fri, 12 Jul 2024 08:55:08 +)
Francis Augusto Medeiros-Logeay via Postfix-users
is rumored to have said:
On 11 Jul 2024, at 20:22, Bill Cole via Postfix-users
wrote:
On 2024-07-11 at 02:42:26 UTC-0400 (Thu, 11 Jul 2024 06:42:26 +)
Francis Augusto
existing" addresses and only accept mail
to those and to send them all to the same mailbox, that can be done,
although LDAP would not be the backend of choice.
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es. It does
not have any capacity to debug those external programs, as it does not
control their execution environments.
I don't like the idea of writing out a lot of logging
lines, that's a slow way to develop the code.
Welcome to the development of mail software. You will do a
ing any listener, using an explicit address is the best approach
because that way you don't have the potential for the name being
resolved in unexpected ways
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addr
used for the SMTP proxy form
of filtering using Amavis. Since SpamAssassin has no SMTP proxy function
and his logs show both sides of a SMTP chat between 2 smtpd processes, I
think Amavis is the most likely thing listening.
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oes limited language detection) but most notably they use
a collection of Perl subroutines as their site configuration, so that
you can do anything with messages that you can code (or find code for)
in Perl.
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the tools to define their
own records. This will not happen in part for the same reasons the
behemoths won't solve it: non-trivial implementation and ongoing support
costs without tangible return on investment.
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(AKA @g
cases
>> one might want to handle XBL, PBL, etc. differently.
>
> It may be helpful to update rbl_reply_maps, so that it will query
> with the domain, after a query with domain=filter returns 'not
> found'.
>
> That's a backwards compatible change that ca
pendent largely on what your users
want/need and what sort of service you want to be providing. For
example, I run mail systems for small and medium sized businesses, most
(but not all) of whom have strict rules against users forwarding mail
anywhere. It's a business policy decision.
--
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On 2024-06-22 at 16:58:26 UTC-0400 (Sat, 22 Jun 2024 16:58:26 -0400
(EDT))
Wietse Venema via Postfix-users
is rumored to have said:
Bill Cole via Postfix-users:
On 2024-06-22 at 15:19:42 UTC-0400 (Sat, 22 Jun 2024 15:19:42 -0400
(EDT))
Wietse Venema via Postfix-users
is rumored to have said
ps could have the same form or even the same content.
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t (i.e. it
likely saw it as a bad TLS handshake.)
For other details, see the local mail logfile
You can see my dqs key in the err
Yes. That's why rbl_reply_maps and postscreen_dnsbl_reply_map [sic]
exists. 'man 5 postconf' has the details for both (as it does for so
very mu
reject or discard it.
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and make sure that the IP which you appear to be coming from
and the name you use in HELO/EHLO have simply symmetric DNS.
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on an insecure unencrypted session. After starting TLS, a second
EHLO is sent and that will include AUTH.
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en for this purpose?
>
>> On 2024-06-10 at 09:35:25 UTC-0400 (Mon, 10 Jun 2024 14:35:25 +0100)
>> Gilgongo via Postfix-users
>> is rumored to have said:
>>> Thanks - I thought about postscreen, but wasn't sure if it would be
>>> overkill for such a sma
than a Perl policy filter.
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>>
>>
> ___
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man v2 predates DMARC and added various
options to munge From somewhere around 2.1.19 to deal with the breakage
to some degree, but apparently it still has corner cases. v3 is better.
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ally works.
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On 2024-05-28 at 20:25:14 UTC-0400 (Wed, 29 May 2024 02:25:14 +0200)
John Fawcett via Postfix-users
is rumored to have said:
On 29/05/2024 01:11, Bill Cole via Postfix-users wrote:
On 2024-05-28 at 18:50:11 UTC-0400 (Wed, 29 May 2024 00:50:11 +0200)
John Fawcett via Postfix-users
is rumored
ely
wish you good luck on finding help with that.
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On 2024-05-28 at 19:18:10 UTC-0400 (Tue, 28 May 2024 19:18:10 -0400)
John Hill via Postfix-users
is rumored to have said:
[...
On 5/28/24 7:13 PM, Bill Cole via Postfix-users wrote:
On 2024-05-28 at 19:04:37 UTC-0400 (Tue, 28 May 2024 19:04:37 -0400)
John Hill via Postfix-users
is rumored to
On 2024-05-28 at 19:04:37 UTC-0400 (Tue, 28 May 2024 19:04:37 -0400)
John Hill via Postfix-users
is rumored to have said:
On 5/28/24 6:54 PM, Bill Cole via Postfix-users wrote:
-o { smtpd_client_restrictions=permit_mynetworks,reject_rbl_client
xbl.spamhaus,org=127.0.0.4
g has address 127.0.0.4
That is probably for the best, as anyone using xbl alone is unlikely to
be explicitly checking for anything else. In principle
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Not Curr
,reject_rbl_client
xbl.spamhaus,org=127.0.0.4,permit_sasl_authenticated,reject }
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On 2024-05-23 at 20:12:09 UTC-0400 (Fri, 24 May 2024 12:12:09 +1200)
Peter via Postfix-users
is rumored to have said:
On 24/05/24 01:42, Bill Cole via Postfix-users wrote:
[...]
It is also helpful as a matter of system design to decouple user
email addresses from their login usernames. For
onsists largely of residential
and mobile consumer IPs.
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an account, none of those usernames and passwords are useful to
the thieves. I set this up almost 30 years ago as a spam control
measure, but the greatest benefit has been in basic account security.
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Bill Cole
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(AKA @grumpybozo@toad.social and many *
can be done with a milter like MIMEDefang or MailMunge which let
you do arbitrary things to messages at each step in the mail flow. I
have used this to debug similar problems with signing and Sendmail's
not-so-obvious mods to messages based on mailer flags.
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b...@scconsult.c
cussion in the
SA community of deprecating sa-compile, although no concrete action has been
taken to do so.
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_
. Were I to
set up a new mail system today without legacy reliance on SA, I would
probably try using rspamd just to learn about it.
Regards.
On Wed, Apr 10, 2024 at 10:23 PM Bill Cole via Postfix-users <
postfix-users@postfix.org> wrote:
On 2024-04-10 at 05:46:36 UTC-0400 (Wed, 10 Ap
carefully and with an
understanding of your users and their needs. You may want to consider using
them in a more complex filtering tool like SpamAssassin where it is possible to
weight the impact of different DNSBLs to fit your needs and to make explicit
direct exemptions if you like.
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#x27;m missing?
Thanks for any ideas on what I'm missing here.
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its own maildir in my account.
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To unsubscri
lly to the behemoth mailbox providers
and other frustrations. I will not tell you to give up but you should
understand that it is far more difficult to do this today than it was a
decade or two ago. Most people can be better served by a good
experienced mail provider than by their own efforts.
#x27;s explicit
design intent.
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