Curious Mind

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I currently use Proxmox Mail Gateway for filtering etc.<br />
Very usable and manageable.<br />
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<a href="https://www.proxmox.com/en/proxmox-mail-gateway/overview" rel="ugc">https://www.proxmox.com/en/proxmox-mail-gateway/overview</a>
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<p>do not use recipient restrictions if the server is open to the wan. if it is lan only, it matters little.</p><p><br></p><p>best to worse</p><p>firewall, client restrictions, helo r..., sender r... , recipients r...</p>
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<p><span style=" text-align: start;" id="isPasted">We're interested in developing a POST fix as solution for the SMTP relay based out of Unix/Linux platform. Is there a straightforward method to incorporate the application's IP address or hostname into the Postfix relay, ensuring that it only accepts connections from these specified sources? Additionally, does Postfix offer support for any development-related challenges or unforeseen errors that may arise within the relay system? We would greatly appreciate any guidance on documentation and pricing details.</span></p>
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We're interested in developing a POST fix as solution for the SMTP relay based out of Unix/Linux platform. Is there a straightforward method to incorporate the application's IP address or hostname into the Postfix relay, ensuring that it only accepts connections from these specified sources? Additionally, does Postfix offer support for any development-related challenges or unforeseen errors that may arise within the relay system? We would greatly appreciate any guidance on documentation and pricing details.

I currently use Proxmox Mail Gateway for filtering etc.
Very usable and manageable.

https://www.proxmox.com/en/proxmox-mail-gateway/overview


do not use recipient restrictions if the server is open to the wan. if it is lan only, it matters little.
best to worse
firewall, client restrictions, helo r..., sender r... , recipients r...

UNIX based SMTP relay solution


We&#39;re interested in developing a POST fix as solution for the SMTP relay based out of Unix/Linux platform. Is there a straightforward method to incorporate the application&#39;s IP address or hostname into the Postfix relay, ensuring that it only accepts connections from these specified sources? Additionally, does Postfix offer support for any development-related challenges or unforeseen errors that may arise within the relay system? We would greatly appreciate any guidance on documentation and pricing details.

Postfix

SMTP

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.