On 2024/5/11 22:51, Jason Hirsh via Postfix-users wrote:
My nonrandom action for tho morning OK I bandaided my going back to an older
main.cf but updating the ssl/tls infoThat brought mail back on line
Sort of
Dovecot still not happy with me but this error seems more warning and best
Hi guys,
On Thu, Mar 7, 2024 at 6:01 PM Steffen Nurpmeso via Postfix-users <
postfix-users@postfix.org> wrote:
> Dan Mahoney via Postfix-users wrote in
> <56abb6d4-e690-4f94-aadb-2f646a6d1...@prime.gushi.org>:
> |> On Mar 6, 2024, at 16:52, Wietse Venema via Postfix-u
On 16/05/24 11:54, David Mehler via Postfix-users wrote:
Hello,
I'm not sure if this is a Postfix or an Rspamd problem or a Gmail
problem, the first two I can do something about the third one not so sure.
I'm running a personal E-mail server running on a VPS via a2hosting.
On 16/05/24 23:40, Jaroslaw Rafa via Postfix-users wrote:
Dnia 16.05.2024 o godz. 12:05:52 Peter via Postfix-users pisze:
On my side the email is accepted from here, and relayed, Rspamd
does sign it, and Postfix's last message in the log is a message
sent delivered, and removed from my que
e
state DOWN group default qlen 1000
link/ether 22:67:80:40:61:5d brd ff:ff:ff:ff:ff:ff
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Hello
When postfix delivery messages to local dovecot, how does the
authentication between postfix and dovecot happen?
Thanks.
You mean, Postfix for SMTP, Dovecot for IMAP.
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To
1
4.7.500 Server busy. Please try again later..."
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sword
cracking, or DDoS?
2. How to strengthen email system security to stop this?
Thanks in advance.
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solver from your ISP.
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On 23/05/24 10:33, Northwind via Postfix-users wrote:
Hello list,
In the last two days, my mail system (small size) met attacks.
mail.log shows a lot of this stuff:
May 23 06:24:29 mx postfix/smtpd[2655149]: warning:
unknown[194.169.175.17]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May
On 23/05/24 10:55, Wietse Venema via Postfix-users wrote:
2. How to strengthen email system security to stop this?
Don't accept mail from home networks. For example, use "reject_dbl_client
zen.spamhaus.org". For this you must use your own DNS resolver,
not the DNSresolve
submission
connections to those countries. Note be careful not to block port 25
connections with this and realize that if you or your users ever intend
to do any travelling this could be problematic.
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how to implement that a policy server? thanks.
In addition I can add one idea:
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On 23/05/24 16:51, Viktor Dukhovni via Postfix-users wrote:
Dovecot has its own mechanism list, while Postfix has a mechanism list
filter. You should be able to set:
smtp_sasl_mechanism_filter = plain
He's trying to prevent login on smtpd, so the setting shou
On 23/05/24 19:02, Jaroslaw Rafa via Postfix-users wrote:
In addition I can add one idea:
I have had quite a success with a policy server that rejects all connections
on submission ports IF it doesn't find a currently established IMAP session
from the same IP address. All "normal&quo
That's great info from all you people. many thanks!
>
> On 23/05/24 19:02, Jaroslaw Rafa via Postfix-users wrote:
>
> >
> > In addition I can add one idea:
> >
> > I have had quite a success with a policy server that rejects all
> > connections
On 24/05/24 02:12, Matus UHLAR - fantomas via Postfix-users wrote:
Zen includes the "PBL" component, which consists largely of
residential and mobile consumer IPs.
Yes, but these are (usually) not considered valid clients, these should
use submission/submissions(smtps) p
.
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On 24/05/24 01:42, Bill Cole via Postfix-users wrote:
Likely brute force.
Not exactly.
"Brute force" password cracking is almost never seen today, as it has
been replaced by a practice commonly called "credential stuffing" where
the attacker has some large collection of
pport.
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On 24/05/24 13:08, Northwind via Postfix-users wrote:
do you mean since I have been using postscreen, there is no need to
manually disable authentication on port 25? since postscreen doesn't
have auth support.
No you definately should disable auth on port 25 regardless. It is
possibl
told to put "smtpd_sasl_auth_enable=no" in
main.cf, blocking the function everywhere, and then put "-o
smtpd_sasl_auth_enable=yes" in the submission stanza(s) in master.cf,
expressly enabling it *just* there.
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smtpd_sasl_auth_enable=yes
and restarted postfix.
now I think it should be working.
regards.
comment this out in main.cf, it already default no
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my guess, submission clients were using ehlo, and a mx client uses helo
command. so postfix differ them based on this command?
regards.
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Thank you so much.
This is really important.
>
> Le 24/05/2024 à 14:17, Northwind via Postfix-users a écrit :
>
> >
> > so, in main.cf:
> >
> > smtpd_sasl_auth_enable=no
> >
> > then in master.cf:
> >
> > submission inet n
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On 24/05/24 21:32, Matus UHLAR - fantomas via Postfix-users wrote:
On 24.05.24 12:00, Peter via Postfix-users wrote:
And the OP is referring to SASL AUTH attacks which are for submission,
not MX connections.
But some of those log lines mention postfix/smtpd, which means they
happen on port
On 25/05/24 00:17, Northwind via Postfix-users wrote:
so, in main.cf:
smtpd_sasl_auth_enable=no
Yes, although the setting is redundant here since it defaults to no
anyways it's fine to explicitly state it if you want.
then in master.cf:
submission inet n -
On 25/05/24 00:29, Benny Pedersen via Postfix-users wrote:
Northwind via Postfix-users skrev den 2024-05-24 14:17:
so, in main.cf:
smtpd_sasl_auth_enable=no
comment this out in main.cf, it already default no
It's fine to have it, it's simply redundan
On 25/05/24 00:43, Benny Pedersen via Postfix-users wrote:
Northwind via Postfix-users skrev den 2024-05-24 14:37:
and restarted postfix.
now I think it should be working.
telnet localhost 25
ehlo localhost
if you see AUTH in ehlo results it not done yet
no AUTH results take another beer
On 25/05/24 01:12, Benny Pedersen via Postfix-users wrote:
Stephan Seitz via Postfix-users skrev den 2024-05-24 15:01:
Carefull, if you have „smtpd_tls_auth_only = yes” (I think), then
you’ll see AUTH after STARTTLS…
port 25 must not be tls only
Since authentication should never be done on
On 25/05/24 09:50, Northwind via Postfix-users wrote:
just to clarify, submissions is not required to set for enabling
sasl_auth on port 465/587. i have tested it, no need to set a separated
submissions.
Incorrect. submission is *only* port 587, submissions is port 465.
my postfix
On 25/05/24 01:37, Matus UHLAR - fantomas via Postfix-users wrote:
He mentioned that on postfix with "smtpd_tls_auth_only=yes" (the
default) authentication is only available when TLS is active
The default is no, but it is very common to have it set to ye
ed it).
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iptables?
I have Postfix setup and use dovecot as SASL. Now, all email accounts
can use the smtp server to send emails. I want to allow only one email
account to send out emails and rest of others can only use POP3 or IMAP.
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On 26/05/24 09:58, Mike via Postfix-users wrote:
Hello,
My setup like below:
I have Postfix setup and use dovecot as SASL. Now, all email accounts
can use the smtp server to send emails. I want to allow only one email
account to send out emails and rest of others can only use POP3 or IMAP
...
Instead of 'submissions', some configurations use 'smtps' for the same thing.
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happened on.
Thanks.
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Wietse Venema via Postfix-users:
Fixed with Postfix 3.8.3, 3.7.8, 3.6.12, 3.5.22:
that's all right. thank you Wietse.
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be
rejected by most MTAs (following the DMARC setting). So how to handle
the case?
Thanks.
Northwind
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#transport_maps =
hash:/etc/postfix/transport.map
Sorry for the text dump, but I'm so frustrated here. Any ideas are appreciated.___
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proxy server), but if
Postfix would deliver the bounce message it would get passed through the proxy
to the mail server backend. Is there a way to force this?
On Thursday, May 30th, 2024 at 1:46 PM, Wietse Venema via Postfix-users
wrote:
> Mailman29:
>
> > Brilliant! I had a loop
30th, 2024 at 2:34 PM, Wietse Venema via Postfix-users
wrote:
> Mailman29 via Postfix-users:
>
> > Well the logs say this, which doesn't help.
> > May 30 14:01:02 mail2 postfix/smtp[1390778]: C5DCBA0501:
> > to=prvs=1880817b8e=myem...@somedomain.com, relay=none, delay
Thursday, May 30th, 2024 at 3:39 PM, Wietse Venema via Postfix-users
wrote:
> Mailman29 via Postfix-users:
>
> > myhostname is set to "mail2" in main.cf, but the mx record points
> > to mail.somedomain.com, (they share the same IP though) would it
> > be doi
Have a good pub visit.
Changing the "myhostname" line in postfix has zero effect. It still says "loops
back to myself" :(
On Thursday, May 30th, 2024 at 4:07 PM, Wietse Venema via Postfix-users
wrote:
> Mailman29 via Postfix-users:
>
> > The network
tse Venema via Postfix-users
wrote:
> Mailman29 via Postfix-users:
>
> > Have a good pub visit.
> > Changing the "myhostname" line in postfix has zero effect. It still says
> > "loops back to myself" :(
>
>
> Having a prob
Hello,
Any sign of postfix 3.9 blacklisting HAproxy because of SMTP
errors/abuse/half-baked connections?
May 31, 2024 1:06 PM, "Gerben Wierda via Postfix-users"
wrote:
Hmm, I just noticed (all outgoing smtp was going to a backup server that works)
that one of my postfix instances c
email.
On Friday, May 31st, 2024 at 2:45 AM, Viktor Dukhovni via Postfix-users
wrote:
> On Fri, May 31, 2024 at 12:33:34AM +, Mailman29 via Postfix-users wrote:
>
> > Yeah, so even changing the domain name on the server (Ubuntu) itself
> > doesn't fix the issue. It
I thought that may be right, but if I comment out the "inet_interfaces" it
fails to take mail from the main server for outbound delivery.
Sent with Proton Mail secure email.
On Friday, May 31st, 2024 at 1:32 PM, Wietse Venema via Postfix-users
wrote:
> Mailman29 via
;mailto'];
$config['managesieve_raw_editor']
= true;
$config['managesieve_disabled_actions']
= [];
$config['managesieve_allowed_hosts']
= null;
ls
/home/c_dikici/sieve/
dovecot.svbin
managesieve.sieve managesieve.svbin tmp USER.sieve
cat
/home/c_dikici/sieve/managesieve.sieve
require
["fileinto","variables"];
set "EDITOR"
"Roundcube (Managesieve)";
set "EDITOR_VERSION"
"9.4";
# rule:[test]
if header :contains
"subject" "test"
{
fileinto
"spam-mail";
}
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On 5/06/24 16:20, Viktor Dukhovni via Postfix-users wrote:
Original text:
Is there a link to the announcement online?
Peter
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On 5/06/24 19:23, Peter via Postfix-users wrote:
On 5/06/24 16:20, Viktor Dukhovni via Postfix-users wrote:
Original text:
Is there a link to the announcement online?
I see it's from the mailop list which, unfortunately has the archives
set private so it doesn't help me to be ab
n't coming up with any other information
about it. Are you able to get back to Michelle to ask her?
Thanks.
On Wed, 5 Jun 2024 at 08:48, Peter via Postfix-users <
postfix-users@postfix.org> wrote:
> On 5/06/24 19:23, Peter via Postfix-users wrote:
> > On 5/06/24 16:20, Vik
-ENHANCEDSTATUSCODES
250-8BITMIME
250-SMTPUTF8
250 CHUNKING
Is anything missing? Any idea why the ehlo=2 is on most deliveries?
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localhost.com...Also, I have /etc/hosts with "127.0.0.1
localhost" and main.cf with:"myhostname = mydomain.com" and "mydestination =
localhost, localhost.localdomain" I am stumped...Anywhere else I should be
looking?
Thank you, Greg
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that would
alter anything postfix tried sending to root of localhost.
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PM EDT, postfix--- via Postfix-users
wrote:
>> I have no idea where this r...@localhost.com is coming from. It must be a
>> misconfiguration but I cannot find it.
> Since root@localhost is rewritten in r...@localhost.com, I would also check
> in aliases/virtual_aliases,
_maps
relay_domains
masquerade_domains
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I tried with debug_peer_list and debug_peer_level, but it looked like not all
commands are included
Did you increase the level higher than 2?
debug_peer_level = 5 should show all SMTP commands issued.
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specify the "[" and "]" in the relayhost destination, then you must use
the same form in the smtp_sasl_password_maps file.
Are you using the same [ ] formatting in both places?
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To
he
levels.
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ueue" for
each message in active?
Kind regards and have a good one
tobi
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le of questions in as comments in the configs - any
thoughts/suggestions very much appreciated! :-)
Jonathan
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On Mon, 10 Jun 2024, 12:37 pm Jeff Peng via Postfix-users, <
postfix-users@postfix.org> wrote:
> why not postscreen for this purpose?
>
Thanks - I thought about postscreen, but wasn't sure if it would be
overkill for such a small server? Could
On Mon, 10 Jun 2024 at 12:58, Matus UHLAR - fantomas via Postfix-users <
postfix-users@postfix.org> wrote:
>
> 3.
> smtpd_recipient_restrictions = permit_mx_backup
>
> avoid this whenever possible. Or at least define permit_mx_backup_networks
>
>
Thanks - I forgot to as
On Tue, 11 Jun 2024 at 05:17, Noel Jones via Postfix-users <
postfix-users@postfix.org> wrote:
> You should remove permit_mx_backup.
>
> This feature is intended for ISP-scale users that may not have a
> complete list of domains that use their server as a backup
On Tue, 11 Jun 2024 at 10:36, Matus UHLAR - fantomas via Postfix-users <
postfix-users@postfix.org> wrote:
>
> >BTW in the meantime, if I add this (where mx2.mydomain.com is our
> secondary
> >MX hostname), I take it that would be a good idea:
> >
> >permit_
On Tue, 11 Jun 2024 at 11:52, Matus UHLAR - fantomas via Postfix-users <
postfix-users@postfix.org> wrote:
> On 11.06.24 11:02, Gilgongo via Postfix-users wrote:
> >OK so I assume I can use the IP address of the primary and secondary MX
> >servers, since all our domains ar
On Tue, 11 Jun 2024 at 16:14, Noel Jones via Postfix-users <
postfix-users@postfix.org> wrote:
> If you need permit_mx_backup, that means postfix doesn't have a
> clear idea of domains it is responsible for.
>
> Please read and study:
> http://www.postfix.org/BASIC
Στις 13/6/24 03:51, ο/η Jeff Peng via Postfix-users έγραψε:
3. use policyd-rate-limit to limit sending rate.
5. use policyd-spf to check sender IP's SPF and reject the failed one.
6. use opendmarc to check sender domain's DMARC and reject the failed one.
7. opendkim is also deployed
characters,
which seems to indicate to me, that postfix sends its own.
I would be happy to receive information regarding this.
Best Regards,
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er on the basis that the "end of DATA part must be terminated
with a .".
Now I am unsure whether this is caused by postfix or the PHP-Mailer sending to
the receiving MTA server via postfix.
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On 17/06/24 13:54, Paul Schmehl via Postfix-users wrote:
I’m seeing this error in the roundcube logs:
[16-Jun-2024 20:28:58 -0500]: SMTP Error: Authentication
failure: mail.stovebolt.com
PIPELINING
SIZE 9
VRFY
ETRN
STARTTLS
ENHANCEDSTATUSCODES
8BITMIME
DSN
SMTPUTF8
CHUNKING (Code
On 17/06/24 16:49, Paul Schmehl via Postfix-users wrote:
On Jun 16, 2024, at 10:30 PM, Peter via Postfix-users
wrote:
It's likely that roundcube is not configured for TLS and postfix is (as it
should be) configured not to offer AUTH until TLS is established.
Yes, postfix is configur
On 17/06/24 16:49, Paul Schmehl via Postfix-users wrote:
Gmail rejects it, but I’ve altered my spf record to include localhost. I hope
once that propagates my problems with be solved.
This will not do anythi9ng for you, you cannot put localhost in an SPF
record.
There are many reasons why
and add its own "." "End of DATA"
for outgoing SMTP.
(Additionally it also strips and adds parts of the DATA itself.)
Is there a ways to verify this on the postfix server? Or would it be required
to setup another SMTP server and somehow watch the incoming mails on that one?
Alto
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Does your roundcube config.inc.php have the smtp_host as
'tls://mail.stovebolt.com:587'; ? It will need the FQDN and not
localhost hence failing authentication??? I know somethig similar
happened to me a while back
Daryl
On 24-06-16 16:00:35, Paul Schmehl via Postfix-users wrote
On 17/06/24 17:16, Peter via Postfix-users wrote:
Without seeing logs and actual config settings I can only guess. One
thing to keep in mind is that there's two types of TLS connection,
implicit TLS and explicit TLS. Implicit TLS connects to a port
dedicated to TLS connections
ch
Peter
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On 18/06/24 13:00, Jeff Peng via Postfix-users wrote:
On 2024-06-18 07:30, Peter via Postfix-users wrote:
On 17/06/2024 17:28, Paul Schmehl wrote:
How do you set up roundcube to not use authentication? I really
don’t need it since it’s on the same machine as the mail server.
What config
etting that disables the ability
of users to create or edit identities in the web interface keeping them stuck
using only the From: address their roundcube account was created with.
$config['identities_level'] = 3;
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On 18/06/24 14:43, Paul Schmehl via Postfix-users wrote:
If I used $config['smtp_host']
= ‘tls;//www.stovebolt.com'; or I used $config['smtp_host'] =
’ssl;//www.stovebolt.com'; roundcube would error out saying it couldn’t
connect to the server.
It's &
On 2024/6/18 10:43, Paul Schmehl via Postfix-users wrote:
On Jun 17, 2024, at 6:30 PM, Peter via Postfix-users
wrote:
On 17/06/2024 17:28, Paul Schmehl wrote:
How do you set up roundcube to not use authentication? I really don’t need it
since it’s on the same machine as the mail server
On Tue, 18 Jun 2024 at 08:31, Jeff Peng via Postfix-users <
postfix-users@postfix.org> wrote:
> Hello,
>
> I have this section in master.cf:
>
> smtps inet n - y - - smtpd
>-o syslog_name=postfix/smtps
>-o smtpd_
_sender_login_maps. I'm
pretty sure you'll need that to list the allowed logins (and/or their
aliases if needed). See https://www.postfix.org/postconf.5.html for how
that works.
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On Wed, 19 Jun 2024 at 03:57, Viktor Dukhovni via Postfix-users <
postfix-users@postfix.org> wrote:
> On Tue, Jun 18, 2024 at 04:15:33PM -0500, Cody Millard via Postfix-users
> wrote:
>
> > The defaults for those settings, as far as postfix is concerne
On 19/06/24 18:51, Tan Mientras via Postfix-users wrote:
Hi
*Trying to setup email REJECT when users try to send to a no-reply email.*
There is no such thing as a no-reply email, there is no part of the
email specification that allows a message to be marked as unable to be
replied to. Many
On 20/06/24 04:35, John Levine via Postfix-users wrote:
It appears that Peter via Postfix-users said:
On 19/06/24 18:51, Tan Mientras via Postfix-users wrote:
Hi
*Trying to setup email REJECT when users try to send to a no-reply email.*
There is no such thing as a no-reply email, there is
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On 20/06/24 17:47, Tan Mientras via Postfix-users wrote:
So many replies!
@Ralph
Is an automated/unattended email notifying the user about something,
providing proper ways of contacting. As this email is not read in any
way, rejecting the mail would be a better way to handle than an
. People
will do sender callout and then reject all e-mail with this as sender.
An option is to have noreply@ delivered to /dev/null. It's valid and a trash
can.
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On Thu, 20 Jun 2024, 2:01 pm Emmanuel Seyman via Postfix-users, <
postfix-users@postfix.org> wrote:
>
> So there's a confusion between the hostname of the mailer and the
> doamin to be used for the SPF check. Is anybody else seeing this ?
>
Yes, I had to recently add a
sistent on having the HELO be
something other than the hostname?
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On 21/06/24 07:13, Wietse Venema via Postfix-users wrote:
Bounces are sent with the null envelope.from address which has no
domain. Therefore, SPF applies policy to a surrogate: the hostname
in the SMTP client's HELO/EHLO command (as if the envelope.from
address was postmaster@helo-arg
On 21/06/24 21:49, Jaroslaw Rafa via Postfix-users wrote:
Dnia 21.06.2024 o godz. 18:45:15 Peter via Postfix-users pisze:
SPF/DKIM/DMARC Checklist for (IMO) the best chance of getting your
mail to be accepted:
1. HELO banner should pass SPF.
2. Envelope Sender should pass SPF.
3. Envelope
On 21/06/24 23:10, Matus UHLAR - fantomas via Postfix-users wrote:
Peter via Postfix-users skrev den 2024-06-21 08:45:
SPF/DKIM/DMARC Checklist for (IMO) the best chance of getting your
mail to be accepted:
1. HELO banner should pass SPF.
2. Envelope Sender should pass SPF.
3. Envelope
Στις 26/6/24 14:19, ο/η Jeff Pang via Postfix-users έγραψε:
May I ask if the main providers like gmail, outlook, yahoo, proton, gmx
etc, have smtp-dane deployed?
there is also this online test tool :
https://en.internet.nl/mail/gmail.com/1276778/
https://en.internet.nl/mail/outlook.com
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