Questions tagged [milter]
Milter is set of API that provides an interface for third-party software to validate and modify messages as they pass through the mail transport system.
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In postfix can I mention sender access map in client restriction?
It's a question out of curiosity rather than necessity. What should happen say I place sender access map inside smtpd_client_restrictions and also place client access map in smtpd_sender_restrictions ...
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What difference does it make to implement a feature as policy service vs as milter in Postfix?
I am trying to implement MTA using Postfix. I am struck at how to implement standard services like SPF, DKIM etc. as well as some custom services. They can either be implemented as policy delegation ...
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How to bypass postfix milters for certain users?
I am trying to setup an incoming MTA server using postfix. I have specific requirements that emails for some of the users should not go through the milters. Is there any way this can be done in ...
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Why does all email, including email that is rejected, get processed by the milter?
I've configured postfix to use a milter.
Unfortunately, it seems that all email goes through the milter, even email that is rejected with "User unknown" messages or email rejected by the ...
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Getting postfix to forward a certain warning to the milter
I'm running postfix 2.11.3 under Debian.
I have installed a homegrown milter which runs in conjunction with CONNECTION, HELO, MAIL FROM, RCPT TO, HEADERS, and EOM, and it's been working well for years....
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2
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457
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opendkim milter not launching on proper server socket
The following error impeded the restart of opendkim
× opendkim.service - OpenDKIM Milter
Loaded: loaded (/lib/systemd/system/opendkim.service; enabled; vendor preset: enabled)
Active: failed ...
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122
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What are my server-side options for scanning email attachments for words and phrases?
I currently run an email system with Postfix/Dovecot and I am looking for a way to scan the contents of attachments (mainly doc(x) and pdf) for certain words and bounce the email back to the user with ...
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postfix: conditionally ignoring certain "User unknown in virtual mailbox table" errors when using a milter
Note: I originally posted this question in Unix/Linux StackExchange, but after a week, there have been no responses. I see more postfix-related discussion here, and so I've voted to close the ...
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spamass-milter[1403]: Could not retrieve sendmail macro "i"!. Please add it to confMILTER_MACROS_ENVFROM for better spamassassin results
I am running an Ubuntu 20.04 based LEMP server on a Raspberry Pi. Installed on it is postfix/dovecot/amavis/spamassassin. When I look at my mail.err logs by running the following command:
cat /var/log/...
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1k
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How to add a single header for any incoming mail with Postfix?
I have Postfix running with a number of smtpd processes configured in master.cf like this:
# Internet facing one
1.2.3.4:25 inet n - y - - smtpd
-o ... # ...
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Postfix client cert info not being passed to opendkim milter
I have a private postfix server that uses dovecot sasl to optionally authenticate submission clients, and I'm trying to set it up to also accept client certificates to allow it to act as a relay host ...
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Make Postfix add "Authentication-Results" header to locally originated mail destined to local domain?
If I write via sendmail or SubmissionS client a mail to my virtual account (my domain is example.org), the mail I receive looks like this:
Return-Path: <[email protected]>
Delivered-To: user@...
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Office 365/exchange metadata prepended before the headers coming from Outbound connector
I have a postfix server getting emails from multiple office 365 tenants using Outbound connectors.
A small percentage of the emails arriving to my server start with some strange data which isn't valid ...
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843
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Postfix refuses to connect to rspamd on CentOS
I have my mailserver setup configured based on this guideline (German), with the possibly important detail that I use CentOS 8 as a base OS instead of Debian. Everything works fine, except that I ...
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Postfix seems to ignore spam miltering for LMTP
I use SpamAssassin through a milter to check e-mail, but it seems postfix does not check local delivery (like contact forms). How can I force Postfix to treat all mail as 'foreign'?
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Why/When are some rejected mails not listed in rspamd history
I am seeing mails which are greylisted/rejected by rspamd according to the postfix log which are not shown in rspamd's GUI history.
I have two questions:
Which are the general cases when mails are ...
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1k
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Postfix Package Openarc
I have a server running Ubuntu 16. I'm trying to get postfix configured to use OpenArc.
I've installed the OpenArc package, but it's not automatically starting on reboot.
If I run
openarc -c /etc/...
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356
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Postfix Conditional redirects
I have a tricky one here!
I have a dinamic list of some... 3000 email addresses that I need to filter on Postfix.
I need that if any of these addresses sends an email to ([email protected] or ...
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8k
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opendkim no signing table match for no signature data
I got an error when I try to install and config opendkim :
no signing table match for '[email protected]'
no signature data
opendkim.conf :
# This is a basic configuration that can easily be ...
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528
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Can't get Sendmail to connect to MIMEDefang
I would like to set a milter using MIMEDefang on Ubuntu 16.04. I have an existing server using Sendmail 8.15.2-3. I installed MIMEDefang 2.78-1ubuntu1.1 (default package from apt). I configured my ...
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How is an SMTP-Client supposed to behave if he receives an Error from the Server?
Consider the following SMTP-Session:
220 mx.example.com ESMTP Postfix
EHLO example.com
250-mx.example.com
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
...
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381
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Can postfix queue message till milter comes back?
I am using postfix and a before queue milter (written in java, running as a seperate process). When milter crashes or not available for a brief period, can postfix be configured to queue till milter ...
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Opendkim fails to start on CentOS 7 (connect to Milter service inet:localhost:8891: Connection refused)
I've got issues with OpenDKIM not starting on my CentOS 7 (with Postfix) server since an update for OpenDKIM crashed a while ago.
I've tried the following:
service opendkim start
Then it says:
Job ...
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951
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Postfix rejecting mail when milter is down - is it possible to let the emails throu anyway?
I am running a emailserver with two milters:
OpenDMARC and OpenARC - both has worked very well and has been stable. I have defined both milters like this:
smtpd_milters = inet:localhost:8893,inet:...
- 1,406
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121
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Postfix milter - Is there a transport security?
Currently I am running a before-queue-milter script (written in java) and I see the postfix is communicating to milter in plain text via a socket connection. Is there a way to protect this by some ...
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2k
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Postfix not triggering OpenDKIM milter
I've been trying for a long time to start signing mail sent via postfix with opendkim. Looking at the logs, it looks like zero attempt is made to communicate with postfix:
Aug 4 20:59:59 localhost ...
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Capture queue ID and 250 OK via milter
We have a web app that sends email. Right now, if we send an email, and it is bounced (for whatever reason), no one knows since it comes from a no-reply address, which is never checked for bounces.
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482
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postfix connection to python-libmilter test-milter
From the python-libmilter I am trying to run the test milter.
The milter is listening (I can connect via telnet to localhost 5000)
I enabled the milter in the postfix config:
milter_protocol = 6
...
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11k
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How to get spamassassin working with postfix as a milter
I'm trying to get spamassassin working on Ubuntu 16.04 with postfix.
When receiving mail, I get messages similar to the following in my logs:
Jun 11 14:29:47 myhost postfix/smtpd[2387]: connect ...
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967
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How can I customize before-queue milter replies in Postfix?
Currently I use postfix with spamass-milter and clamav-milter as before-queue milters, which both work very well. I reject hundreds of messages a day on my small personal mail server on the basis of a ...
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2k
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correct order for Postfix milters
I use the following milters with Postfix:
ClamAV, OpenDKIM, OpenDMARC, Rspamd
This is also the order they are being called via smtpd_milters.
What would be the best order for them regarding ...
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1k
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openDKIM breaks email forwarding
After moving our server over to Postfix, I have decided to implement DKIM using OpenDKIM. I have been successfully able to install and run this, but while it is enabled as a milter, all mail ...
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2k
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Configuration of ClamAV on Fedora Core 21 with Postfix
I was unable to find any help anywhere on installing Clamav on a modern Fedora system. All the advice out there is old and doesn't apply - so far as I found anyway.
And, it's not enough straight-...
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opendkim public key not available [closed]
I'm having problems with my mail server sending or reciving mails from/to hotmail can anyone explain for newbies what all this errors on postfix log/gmail header/website dkim validator are telling me ...
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940
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Postfix does not trigger my before-queue milter script
I can't get the milter triggered when a new email is accepted by Postfix before-queue. Obviously, I don't do something properly but I can't figure out what.
I have the following setup: Ubuntu Server, ...
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6k
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Milter service needs transport:endpoint instead of "/var/run/opendkim/opendkim.sock"
I have set postfix with milter based on this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-dkim-with-postfix-on-debian-wheezy
But then posptfix reported that ...
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765
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Need linux milter solution to log email body into database
We exchange emails with various clients and vendors. I am trying to implement a solution where all the email communications between our rep and the client or vendor is saved in our database so in our ...
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2k
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How to setup Postfix with Opendkim to automatically sign PHP emails?
I've found that:
submitted emails are signed properly (ie those sent with MUA's like
Outlook and Thunderbird)
command-line sent emails are signed properly
emails sent with PHP, in particular case ...
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What can cause an intermittent broken pipe error with a SendMail milter?
CentOS 5 / SendMail 8.14.x
I'm noticing intermittent errors with a milter on my SendMail server. Here's an excerpt from the maillog (I've edited hostname, QID, milter name, and recipient address to ...
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Postfix + Python MIlter
I want to write own miter, but I have problem.
I have installed postfix, libmilter and python module Milter.
I try to run sample.py milter which I found in pymilter-0.9.7.tar.gz (from http://bmsi.com/...
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What's removing stuff from /var/run at reboots from a fedora machine?
I am running a FC18 machine on which I am testing a piece of software (smf-sav, a milter) keeping part of its working files under /var/run/smf-sav/.
That directory keeps disappearing after reboots. ...
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Clamav. WARNING: No clamd server appears to be available
I have clamav.log full of these messages, what might be the problem and how to fix this?
I have Debian
clamav-0.97.6+dfsg-1~squeeze1
spamassassin-3.3.1-1
dovecot-pop3d-1.2.15-7
postfix-2.7.1-1+...
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6k
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Configuring Postfix to use milter (archiveSMTP)
How does one config Postfix to use the milter "archiveSMTP" ?
The milter config instructions (http://www.dancingfortune.com/projects/archivesmtp/download.php) mention only one socket for ...
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How can I collect the information sendmail sends to a milter and receives from that milter?
SendMail | CentOS
For debugging/troubleshooting purposes, I'd like to examine the raw information that sendmail is sending to a local milter (and also the data being returned by a milter). Is that ...
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Do I need libmilter somewhere to make postfix use dkim-filter?
I've been doing everything the instructions say http://www.postfix.org/MILTER_README.html and I was able to build, configure and run dkim-filter but postfix doesn't seem to call it.
I've got this in ...
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milter-regex / Ubuntu or Debian
I have been using milter-regex (http://www.benzedrine.cx/milter-regex.html) on Redhat for some time and am moving to Ubuntu.
When compiling the source from their website, I get errors, even though I ...
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