* Matus UHLAR - fantomas via Postfix-users :
> On 02.11.23 10:49, Ivan Ionut via Postfix-users wrote:
> > Hi, it's possible that postscreen does not block the email when
> > postscreen_dnsbl_threshold is reached but to pass that email to
> > spamassassin(with a score and a tag).
>
> Postscreen
* Matus UHLAR - fantomas via Postfix-users :
> > And thus the solution is: Don't use the dnsbl in postscreen, but ONLY
> > in spamassassin/rspamd instead.
>
> No problem, you can safely use postscreen with multiple DNSBLs and DNSWLs.
> - just don't rely on single hit, unless it's your own DNSBL.
* Ralf Hildebrandt via Postfix-users :
> * Stanislav via Postfix-users :
> > Greetings,
> >
> > After upgrading from postfix 3.7.3 to postfix 3.8.2, I've noticed my email
> > is not signed with DKIM anymore. After further investigation, I've found
> > that P
* Stanislav via Postfix-users :
> Greetings,
>
> After upgrading from postfix 3.7.3 to postfix 3.8.2, I've noticed my email
> is not signed with DKIM anymore. After further investigation, I've found
> that Postfix ignores milter on outgoing emails (incoming goes through milter
> ok).
How is the
* Joey J via Postfix-users :
> I have been getting a ton of pipelining errors over the past few weeks and
> I can't figure out why.
I'm not seeing any here, so let's focus on what you're posting here.
> It keeps saying queue write error, but disk & cpu performance is good, disk
> space is good.
Hi!
Since this morning, various MX hosts in *.mail.protection.outlook.com
reporting are reporting back temporary errors for us:
Exhibit A)
host ohri-ca.mail.protection.outlook.com[104.47.75.228] said: 452 4.5.3 Too
many recipients (AS780090)
* Benny Pedersen via Postfix-users :
> Mar 17 11:38:31 localhost postfix/smtpd[22150]: lost connection after
> STARTTLS from list.sys4.de[2a03:4000:10:51d:b8ce:63ff:feca:a5a0]
> Mar 17 12:09:10 localhost postfix/smtpd[23415]: lost connection after
> STARTTLS from
> The books Michael writes are little gems, nice to read, often funny,
> always "to-the-point" and not expensive. This might be his most
> important (technical) book.
I took a quick glance, and Chapter 0 is looking good!
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité -
* Patrick Ben Koetter via Postfix-users :
> approach to subscriber self management. Once you've become a registered
> MLM platform participant you can easily change settings that will apply to all
> lists you've subscribed to in one place. I consider that a great usability
> benefit for
* Aosars Repository via Postfix-users :
> Hi all,
> I have installed postfix on Ubuntu server 22 and configured to use gmail
> smtp.But it fails to send mails.
The log should inform you why it's failing.
I have a config snippet here:
main.cf:
smtp_use_tls=yes
relayhost = smtp.gmail.com:587
#
* Gino Ferguson via Postfix-users :
> Can you explain me the practical difference between relay and smtp delivery
> on a relay server?
The "relay" and "smtp" service are both "smtp" services.
But: If you seperated "relay" from "smtp" you can do stuff like:
defer_transports = relay
without
* Israel britto via Postfix-users :
> Hey, I have a strange problem, my incoming queue is growing and my
> active and deferred queues are low on queue items. I checked and I
> have a lot of incoming mailer-daemon and double-bounce emails, is
> there a way to discard these messages?
Read them
* Wietse Venema via Postfix-users :
> Start by looking for "@domain" wildcards in virtual_alias_maps or
Somewhat related: I was under the impression that virtual_alias_maps
"@domainA @domainB" did NOT break recipient verifiction. Or am I
hallucinating?
--
Ralf Hildebrandt
Geschäftsbereich IT
> smtpd_recipient_restrictions =
>permit_mynetworks,
>permit_sasl_authenticated,
>reject_unauth_destination,
>check_policy_service unix:private/policyd-spf,
>reject_rbl_client zen.spamhaus.org,
>reject_rbl_client bl.spamcop.net
>
> When I sent message from a Spamhaus Zen
* Corey Hickman via Postfix-users :
> Since almost every sending MTA has the queues, do I need a secondary MX for
> my domain email?
I don't know if the RFC mandate it, but nowadays everbody knows
better, so WTF.
> I am afraid the secondary MX was abused by spammers.
Indeed. The secondary
* Tom Reed via Postfix-users :
>
> Dear lists,
>
> I in fact use rarely this mailbox: t...@dkinbox.com
> But today I found both my domain "dkinbox.com" and the mailserver IP:
> 38.45.66.54 are listed into spamhaus "css" and "dbl" blacklists.
Checking
* Patrick Ben Koetter via Postfix-users :
> Greetings,
>
> I was wondering if there's something similar to warn_if_reject when it comes
> to dry-run / test-run MILTER applications in Postfix. The documentation on
> warn_if_reject does not mention MILTERs, which usually means the feature isn't
>
> smtpd_tls_cert_file = /etc/pki/tls/certs/postfix.pem
> smtpd_tls_key_file = /etc/pki/tls/private/postfix.key
Try adding:
smtp_tls_key_file = $smtpd_tls_key_file
smtp_tls_cert_file = $smtpd_tls_cert_file
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité -
* Scott Kitterman via Postfix-users :
> DKIM has no policy mechanism associated with it, so there's no basis in any
> standardized mechanism to determine if a DKIM failure should be cause for
> rejection. I don't think it makes logical sense to treat a message with a
> DKIM signature that
* Corey Hickman via Postfix-users :
> Hello list,
>
> We have 3 smtp servers for sending messages. When mail in one server has
> delivery issue, how can we setup it to use another more servers for
> second/third delivery?
You could use smtp_fallback_relay
--
Ralf Hildebrandt
Geschäftsbereich
* Tom Reed via Postfix-users :
> Hello
>
> How can I implement the following feature?
> the messages sent to:
>
> foo+la...@sample.com
> foo+lab...@sample.com
> ...
>
> all them will be delivered into:
> f...@sample.com
recipient_delimiter = +
--
Ralf Hildebrandt
Geschäftsbereich IT |
> i am running Postfix 3.4.14 and try to set up mailrouting to multiple
> smtp hosts.
> transport_maps = hash:/etc/postfix/mailertable
>
> example.com smtp:[mx1.foobar.com],smtp:[mx2.foobar.com]
>
> However i get:
> fatal: garbage after "]" in server description:
>
> postfix/submission/smtpd[23263]: NOQUEUE: reject: RCPT from
> unknown[21.193.143.55]: 450 4.1.1 : Recipient address rejected:
> unverified address: unknown mail transport error; from=
> to= proto=ESMTP helo=
The verification fails with a "unknown mail transport error"
Check the logs (on both
* Wietse Venema via Postfix-users :
> As a few on this list may recall, it is 25 years ago today that the
> "IBM secure mailer" had its public beta release. This was accompanied
> by a nice article in the New York Times business section.
Ah, it's today. Recently I scrolled through the Changelog
http://ftp.porcupine.org/mirrors/postfix-release/index.html
lists:
http://ftp.porcupine.org/mirrors/postfix-release/experimental/postfix-3.9-20240109.tar.gz
http://ftp.porcupine.org/mirrors/postfix-release/experimental/postfix-3.9-20240109.HISTORY
both of which report:
The requested URL
> Would it be possible to log at least the queue-id as well? Also sender
> and/or recipient would be nice ;-) Or is it for security that no more
> information is logged?
20240104
Cleanup: when the Postfix SMTP server rejects bare ,
log the helo, mail and rcpt information if available. Files:
* Linkcheck via Postfix-users :
> If someone wishes to check this, a typical form (which is sent to me with
> copy to "you") is at
> https://www.linkcheck.co.uk/
> under menu option Contact & Enquiries.
I tried your form:
Authentication-Results: mail-cbf-ext.charite.de;
dkim=pass
* Chris Green via Postfix-users :
> On Tue, Dec 05, 2023 at 05:41:11PM +0100, Ralf Hildebrandt via Postfix-users
> wrote:
> > * Chris Green via Postfix-users :
> >
> > > mydestination =
> >
> > no mail is delivered locally. Thus "/etc/alias
* Chris Green via Postfix-users :
> mydestination =
no mail is delivered locally. Thus "/etc/aliases" doesn't get to do
anything
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netz | Netzwerk-Administration
Invalidenstraße 120/121 | D-10115 Berlin
Tel. +49 30 450 570 155 | Fax:
* duluxoz via Postfix-users :
> A quick question (just to clarify things in my own mind):
>
> If `non_smtpd_milters = $smtpd_milters`, does this mean that an email
> received on port 25 passes through the milters twice; once for the
> `smtpd_milters` (from the `smtpd(8)` process) and again for
* Wietse Venema via Postfix-users :
> Wietse Venema via Postfix-users:
> > If you use defer_transports to freeze mail deliveries, then some
> > messages may get close to the bounce_queue_lifetime, meaning that
> > Postfix will try to deliver them only once.
>
> And that was incorrect.
Hi!
I wonder if this is possible:
If a PCRE/regexp style map is triggering, it can be quite hard to
find out WHICH pattern actually caused the action.
So maybe postmap (when invoked with "-b", "-h" or "-q key") could emit
which regular expression (or which line it was in) actually matched.
* Allen Coates via Postfix-users :
> > Better yet, don't be lazy, include a fingerprint string in your RHS
> > reject rule values.
> Postscreen doesn't have the option of unique RHS fingerprints; nonetheless,
> it would useful to see which (of several)
> ACLs was rejecting an incoming
I'm using postfwd3 as a policy service for rate limiting based on the
envelope sender address and number of recipients.
We're both limiting "freemailer" senders (they can only reach a low
number of internal recipients before being restricted) as well as our
internal users (they can only reach a
* Viktor Dukhovni via Postfix-users :
> Note that if you want the actual recipient addresses, (not just a
> count),
I just need the count in this case
> you'll need to also intercept recipient restrictions.
oh!
> The Postfix smtpd(8) server does not keep the recipient list in memory, the
>
* Matus UHLAR - fantomas via Postfix-users :
> > envelope sender address and number of recipients.
>
> not authenticated user? ;-)
Yes, I'm also checking if the come from our exchangeserver.
> if you want to see/process mail size, using it in
> smtpd_end_of_data_restrictions is necessary.
> if
* Gino Ferguson via Postfix-users :
> Hi,
>
>
> We have a relay server which has been working fine (postfix 3.3.0-1ubuntu0.4)
>
> Now there are ~20K mails in the active queue for a certain recipient and they
> are just sitting there.
mailq is reporting what reason?
> Such an email just
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