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PowerMTA 5.5r1 is out!!!!  Please contact support@port25.com for a license and download access.

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 on: January 21, 2019, 03:39:34 PM 
Started by deliman - Last post by deliman
Hi !

I will set up a new /24 and domain

What's the recomended configuration for this?

Warm-up , pool , vmtas, etc

Can i to set up a virtual.mta with 10 ips?? more o less?

Very Thanks!!

 on: January 11, 2019, 04:22:13 PM 
Started by deliman - Last post by deliman


 on: January 10, 2019, 05:37:17 PM 
Started by deliman - Last post by CaLViN
As long as you dont change the domain itself,changing the subdomain on returnpath wont change anything in terms of reputation.

 on: January 10, 2019, 05:07:32 PM 
Started by deliman - Last post by deliman
Hi, what is the best configuration to header return-path

At this moment we use the same for all ips of X.X.X.X/24

ie: Return-Path : <name@subdomain.domain.com>

It's fine??

Or we should use <name@subdomain1.domain.com> ( X.X.X.1)
<name@subdomain2.domain.com> ( X.X.X.2)
<name@subdomainN.domain.com> ( X.X.X.N)

where  subdomainN.domain.com is the RNDS for the ip X.X.X.N


 on: January 04, 2019, 03:12:02 PM 
Started by WillemStam - Last post by deliman
HI, can you explain this??

If you are using PowerMTA 4.5r6 or later then you can also use mx-rollup-list feature to consolidate Microsoft related domains into one queue. This will improve resource utilization. For example, Microsoft EU and APAC :

# Microsoft
mx eur.olc.protection.outlook.com outlook-eur.rollup
mx apc.olc.protection.outlook.com outlook-apc.rollup

whereis hotmail.com


 on: January 04, 2019, 03:06:36 PM 
Started by WillemStam - Last post by deliman
We only use http://link, we don't use mailto:  for all domains (hotmail, gmail, yahoo, and other domains)

I'ts rigth?

 on: December 13, 2018, 08:46:19 AM 
Started by WillemStam - Last post by WillemStam
In this BLOG post we discuss the implementation of a List-Unsubscribe header and share a use-case. For PMTA users we present an interesting add-on to streamline MAILTO unsubscribe requests.

 on: November 27, 2018, 11:29:56 AM 
Started by ag - Last post by Port25-Admin1

 on: November 27, 2018, 10:48:10 AM 
Started by WillemStam - Last post by sperotti
Thanks so much for posting this and sharing it with our Forum.  This is valuable information for all of our PowerMTA customers.

 on: November 27, 2018, 10:36:08 AM 
Started by WillemStam - Last post by WillemStam
At Postmastery, we work for various ESPs and brands to optimise email delivery. Recently, one of our clients faced a mysterious DKIM failure when sending mail to Outlook.com domains.
Please find below the full case description.

Our main finding: Use proper encoding and always test your output at a header level with various large ISPs like Outlook, Gmail and Yahoo. We advise using Quoted-Printable transfer encoding for best results.

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