@raf is right. if you have enabled opendkim and policyd-spf on postfix, that
headers related to spf and dkim will be added automatically.
regards
November 16, 2022 at 8:09 AM, "raf" wrote:
>
> On Mon, Nov 14, 2022 at 12:33:02PM -0700, Bryan Arenal
> wrote:
>
> >
> > Hi there,
> >
> >
On Mon, Nov 14, 2022 at 12:33:02PM -0700, Bryan Arenal
wrote:
> Hi there,
>
> Is Postfix capable of checking DKIM and SPF records on incoming email
> and adding headers based upon its findings? For example, an email
> with a valid DKIM signature shows these headers sent to O365:
>
>
On Tue, Nov 15, 2022 at 11:56:22PM +0100, r.barc...@habmalnefrage.de wrote:
> So my idea might only work, if I use the LAN IP address (e.g.
> 10.1.2.3) of the internal mail server as relay_host. If Postfix can't
> connect to 10.1.2.3, it will probably retry mail relaying for some
> days,
Wietse, Thanks so much for your quick and helpful response! It's an honor to
talk to you!
So my idea might only work, if I use the LAN IP address (e.g. 10.1.2.3) of the
internal mail server as relay_host.
If Postfix can't connect to 10.1.2.3, it will probably retry mail relaying for
some days,
r.barc...@habmalnefrage.de:
> This leads to my question: What happens to laptop-locally generated
> / received emails, if their local Postfix can't reach the relay_host
> in the intranet?
The Postfx SMTP client will retry delivery after a soft error (host
or port not reachable) until the message
Hello,
I'd like to install Postfix on our Debian Linux laptops to handle local system
messages / notifications, e.g. from "unattended-upgrades" (like "dnf-automatic"
on RH-based Linuxes) or from failed cron jobs.
In our LAN we have an internal Postfix VM (not accessible from the Internet)
On Tue, Nov 15, 2022 at 11:59:30AM -0500, Viktor Dukhovni wrote:
> > I'm wondering how others would do this. Is there a similar tool to
> > check smtp auth like 'smtp-source' for stress testing? Or everyone has
> > to come up with their own solution?
>
> You could try
On Tue, Nov 15, 2022 at 03:07:42PM +, Juan Smitt Jr wrote:
> We frequently have to create relay rules to remote smtp servers using
> username and password.
>
> Before we create the confguration, we always check the availability of
> the remote server and port and we also try to check if the
On Tue, Nov 15, 2022 at 03:59:36PM +, Eric Wilkison wrote:
> Syslog can drop the logs under heavy load. Look for these logs to confirm:
>
> xxx messages lost due to rate-limiting
>
> Add to rsyslog.conf to disable rate limiting (assuming your using imjournal):
>
>
On Tue, Nov 15, 2022 at 01:12:49PM -0300, Christian Schmitz wrote:
> I have a postfix server running for years, send and receive emails well with
> another servers and the email clients ( kmail) are in the internal trusted
> network.
As a matter of existing best practice, submission of mail
Hi Everyone:
I have a postfix server running for years, send and receive emails well with
another servers and the email clients ( kmail) are in the internal trusted
network.
In the near future i will require use the from outside of company ( internet )
and i found that some internet services
Syslog can drop the logs under heavy load. Look for these logs to confirm:
xxx messages lost due to rate-limiting
Add to rsyslog.conf to disable rate limiting (assuming your using imjournal):
$imjournalRatelimitInterval 0
$imjournalRatelimitBurst 0
Eric
On 11/15/2022 2:25 AM, Fourhundred Thecat wrote:
I have this option in master.cf for smtpd:
-o cleanup_service_name=anonymize-sender-ip
and here it is defined:
anonymize-sender-ip unix n - n - 0
cleanup
-o
Hi,
We frequently have to create relay rules to remote smtp servers using username
and password.
Before we create the confguration, we always check the availability of the
remote server and port and we also try to check if the provided username and
password are valid.
For this we are using
Hi
Thanks for the reply.
OS : CentOS Linux release 7.9.2009 (Core) - VMWARE Virtual Machine,
8vCPU, 24GB RAM
Postfix version : postfix3-3.5.8-1.gf.el7.x86_64
_postconf -nf _
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
bounce_queue_lifetime = 0
command_directory =
Dhammika Gunawardena:
> Hi
>
> We maintain a private relay server to send ebills for a customer.
> During peak sending hours, we miss about 5-10% of incoming messages but
> outgoing messages are available.
> We capture subject line in incoming message to track ebills. When
> incoming messages
> "Dhammika" == Dhammika Gunawardena writes:
> We maintain a private relay server to send ebills for a customer.
Please send more details on your setup: OS, postfix version, "postconf
-nf" output, etc. Give more details
> During peak sending hours, we miss about 5-10% of incoming
Hi
We maintain a private relay server to send ebills for a customer.
During peak sending hours, we miss about 5-10% of incoming messages but
outgoing messages are available.
We capture subject line in incoming message to track ebills. When
incoming messages are missing, we are in trouble.
Hello,
I have this option in master.cf for smtpd:
-o cleanup_service_name=anonymize-sender-ip
and here it is defined:
anonymize-sender-ip unix n -n-0
cleanup
-o header_checks=regexp:/var/local/postfix/maps/anonymize-sender-ip
and in
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