Re: Issue routing mail

On Sunday, November 13, 2022 7:26:25 PM EST David wrote: I'm noticing that two installations of Postfix: version 3.4.13-0ubuntu1.2) on Ubuntu 20.04.5 version 3.6.4-1ubuntu1 on Ubuntu 22.04.1 are both failing to use the MX value for outgoing mail. Specifically, sending mail to

Re: Postfix is Rewriting the email from address with the serveraddress when server from is foreign

will look into that Happy Monday !!! Thanks - paul Paul Kudla Scom.ca Internet Services 004-1009 Byron Street South Whitby, Ontario - Canada L1N 4S3 Toronto 416.642.7266 Main 1.866.411.7266 Fax 1.888.892.7266 Email p...@scom.ca On 11/13/2022 8:00 PM, raf wrote: On

How to verify that the Return-Path matches the From header

Hi, Some of my users got emails pretending to be from the admin, but looking into the source of these emails, the From header was modified to mislead the users, but the return-path still holds the real sender email address. What is the best way to deal with this? Is it a good idea to match the

Re: How to verify that the Return-Path matches the From header

Some of my users got emails pretending to be from the admin, but looking into the source of these emails, the From header was modified to mislead the users, but the return-path still holds the real sender email address. What is the best way to deal with this? Is it a good idea to match the

Re: How to verify that the Return-Path matches the From header

On Mon, Nov 14, 2022 at 04:16:19PM +0100, wodel youchi wrote: > Some of my users got emails pretending to be from the admin, but looking > into the source of these emails, the From header was modified to mislead > the users, but the return-path still holds the real sender email address. > > What

Re: How to verify that the Return-Path matches the From header

On 11/14/2022 9:16 AM, wodel youchi wrote: Some of my users got emails pretending to be from the admin, but looking into the source of these emails, the From header was modified to mislead the users, but the return-path still holds the real sender email address. What is the best way to deal

How do check DKIM and SPF on incoming email?

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: ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass

Re: PBL and rejects

On Mon, Nov 14, 2022 at 04:08:28PM -0500, Alex wrote: > I'm hoping I can ask this question here. Somehow the PBL considered the IP > addresses given to us by our ISP (I can share this if needed) as ineligible > to send email, resulting in any recipient domain that checks the PBL to > reject our

Re: How do check DKIM and SPF on incoming email?

Is Postfix capable of checking DKIM and SPF records on incoming email and adding headers based upon its findings? Not the postfix code itself, but postfix supports milters which do this. My google searches have only returned results on how to do DKIM signing on outbound email and not how to

PBL and rejects

Hi, I'm hoping I can ask this question here. Somehow the PBL considered the IP addresses given to us by our ISP (I can share this if needed) as ineligible to send email, resulting in any recipient domain that checks the PBL to reject our email, including every email sent to a Microsoft 365

Re: How do check DKIM and SPF on incoming email?

Is Postfix capable of checking DKIM and SPF records on incoming email and adding headers based upon its findings? Not the postfix code itself, but postfix supports milters which do this. My google searches have only returned results on how to do DKIM signing on outbound email and not how to