s the offender by inserting an iptables DROP entry.
>
> I block a lot of spammers this way. I wouldn't think of running a
> mail server without it.
>
> Bill
>
>
> On 2/4/2016 4:10 PM, Inteq Solution - Dep. Tehnic wrote:
> > Thank you Wietse,
> >
> >
name resolution response code
Inteq Solution - Dep. Tehnic:
> "The unknown_client_reject_code parameter specifies the response code
> for rejected requests (default: 450). The reply is always 450 in case
> the
> address->name or name->address lookup failed due to a temporar
Hello,
I am having some problems with a host hammering my logs all day long because
the connection is rejected with 450, even after I have spoken with the
person responsible for the domain, explaining why this is happening and what
he should do to fix it.
hostname ip92.llpdynamics.com does
Small error:
score USER_IN_WHITELIST 200 should have a negative score so make it score
USER_IN_WHITELIST -200
Razvan Constantin
+40.755.096.096
t...@inteq.ro
-Original Message-
From: Inteq Solution - Dep. Tehnic [mailto:t...@inteq.ro]
Sent: Thursday, March 19, 2015 6:42 AM
will do the job for me.
It might be an easy fix, but I just thought of it now.
Hope someone finds this useful.
Razvan Constantin
-Original Message-
From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Inteq Solution - Dep.
Tehnic
Sent: Friday, F
Hello,
For some time now, on and off, I see this problem.
Users sending or replying to yahoo.com users receive the error: "This user
doesn't have a yahoo.com account"
Of course, my first reaction was to blame the user not writing the email
address correctly.
But checking the logs I see, many
: Reject domain but allow inbound for a local user
On 2/5/2015 8:00 AM, li...@rhsoft.net wrote:
>
> Am 05.02.2015 um 14:54 schrieb Inteq Solution - Dep. Tehnic:
>> Thank you for taking your time to reply Wietse,
>>
>> I might have been a bit ambiguous about my problem.
>> I
domain but allow inbound for a local user
Inteq Solution - Dep. Tehnic:
> somedomain.com REJECT
> Is there any way to REJECT a domain but allow inbound messages to a
> specific local user from the rejected domain?
u...@example.comDUNNO
example.com REJECT
If
Hello,
Using check_sender_access to REJECT a list of domains
Using the format:
somedomain.com REJECT
My searching skills seem to be subpar today, so I request your help.
Is there any way to REJECT a domain but allow inbound messages to a specific
local user from the rejecte
ge-
From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema
Sent: Sunday, October 05, 2014 7:48 PM
To: Postfix users
Subject: Re: opendkim and opendmarc failure for yahoo.com
Inteq Solution - Dep. tehnic:
> No security appliance in front
problem.
-Original Message-
From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema
Sent: Sunday, October 05, 2014 6:53 PM
To: Postfix users
Subject: Re: opendkim and opendmarc failure for yahoo.com
Inteq Solution - Dep. tehnic:
> Oct 5 17
Hello,
Having some issues with messages from yahoo.com
They seem to fail dkim and dmarc verification.
Dmarc from gmail.com (for example) works just fine.
Any clue if Yahoo is having some problems?
Can't seem to find any on my side.
Oct 5 17:55:35 ns4 postfix/smtpd[5789]: connect from
n
Your domain seems to be on URIBL blacklist (black)
"Contains an URL listed in the URIBL blacklist [URIs: d u s t y p e x.com]"
jfyi
Razvan
-Original Message-
From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema
Sent: Tuesday, June
Thank you Wietse, Viktor,
Learned something new today.
Even though I read the documentation regarding content filtering, it seems I
missed that part.
Will look for a complementary solution.
All the best
Razvan
-Original Message-
From: owner-postfix-us...@postfix.org
[mailto:owner-po
Hello Viktor,
I admit, I am not a guru in Postfix but I am trying.
I do not understand where the confusion is?
Using both my examples (mime_header_checks and header_checks), my executable
(.bat) is blocked when I send a test email from Outlook with the correct
REJECT text.
But, when testing from
Hello
Tonight, while checking Postfix config, I have stumbled upon something
weird.
I am blocking executables and potentially dangerous extensions with
header_checks = pcre:/etc/postfix/header_checks.pcre
Inside header_checks.pcre I have:
/^Content-(Disposition|Type).*name\s*=\s*"?(.*(\.|
One more problem I spotted while having this situation is that SPF checking
is not done automagically for subdomains. I learn something new everyday.
You have domain.tld and SPF setup with -all
If your FQDN is mail.domain.tld, there will be no SPF check for it in case
of spoofing.
To counter this
Found the problem
I am using check_recipient_access and for some reason I had a line with bad
code.
Fixed it and now it works
Inside the hash file I have:
domain.tld REJECT Reason for reject
--
View this message in context:
http://postfix.1071664.n5.nabble.com/Strange-spoof-problem-tp62
Hello
Today while checking security I stumbled upon a weird spoof problem.
I have enabled SPF checking and and reject_sender_login_mismatch and
everything works.
But, If I try to send email from an external SMTP server and try to spoof as
shown below, all my SPF and stuff checks will fail.
Inform
Decided to tar my log and send it.
Tested with the yesterday log containing malware links and it works.(so far)
Thank you for your input
My approach:
#!/bin/bash
# Use apt-get install sendemail (this is NOT sendmail) if you do not have it
/usr/sbin/pflogsumm -d today --problems_first --smtpd-sta
Thank you for your replies.
The message is from localhost, not from another postfix machine, but the
machine has multiple virtual servers/aliases.
The reason behind a log file containing no malware but still being flagged
as virus, is because the scanner is configured to check links also (links
t
Hello
For some time now I was wondering why some of my pflogsumm emails were not
received.
Digging deeper into the problem today, I can see the emails are being
blocked by Postfix because it "contains" a virus.
Nov 4 21:36:52 ns4 postfix/smtp[9383]: 338E14303B: to=,
relay=127.0.0.1[127.0.0.1]:10
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