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PowerMTA 5.0r3 is out!!!!  Please contact support@port25.com for a license and download access.

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 11 
 on: January 23, 2019, 12:38:46 PM 
Started by deliman - Last post by Maarten Oelering
You should not use more IPs than necessary. A volume less than 10K per day per IP is too low. A volume of 1M per day per IP is on the upper end.
For a mailing list of 1M I would use a pool of 4 IPs. If you are an ESP I would create pools for groups of customers. And reserve the remaining IPs for customers that prefer dedicated IPs.
To warmup the reputation on the IPs you need to start with low volume, or split the volume using cold-virtual-mta and forward the remainder to another platform.
Make sure all prerequisites are in place: authentication, feedback loops, reputation monitoring, ...

Maarten
Postmastery

 12 
 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!!


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

Thanks!!!

 14 
 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.

 15 
 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

Thanks!!

 16 
 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

Thanks!!

 17 
 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?

 18 
 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.
https://www.postmastery.com/list-unsubscribe-header-critical-for-sustained-email-delivery/

 19 
 on: November 27, 2018, 11:29:56 AM 
Started by ag - Last post by Port25-Admin1
https://www.spamhaus.org/faq/section/Glossary#233

 20 
 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.

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