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PowerMTA 5.0r5 is out!!!!  Please contact support@port25.com for a license and download access.

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 1 
 on: May 20, 2020, 02:27:33 PM 
Started by Phonexa - Last post by Phonexa
Hi,

We're facing an issue even when sending double opt-in transactional emails from PMTA to Yahoo servers at the speed of 20-50 emails we start getting the following message in the queue, which somehow doesn't make any sense because authentication is 100% (SPF, DKIM, DMARC, RDNS) and 100% no Spam complaint or Bounce.

2020-05-19 18:23:18 Error: "421 4.7.0 [TSS04] Messages from xxx.xxx.xxx.xxx temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html" while connected from domain.com (xxx.xxx.xxx.xxx) to mta6.am0.yahoodns.net (xxx.xxx.xxx.xxx)

We've also tried contacting Yahoo's Postmaster team but they provide same replies, not understanding. That it's a simple SMTP connection 1 IP with 1 Domain, processing only transactional emails.

So really what max-connect-rate, max-msg-rate & other setting should we use? Because this is very annoying people not receiving billing, support, etc. emails.

Looking for some urgent help.

Thanks a lot!

 2 
 on: May 19, 2020, 06:48:19 AM 
Started by WillemStam - Last post by WillemStam
Postmastery strongly encourages the use of a version control system for PowerMTA configurations.

For this reason, Postmastery created a new blog post where we define version control, explain why PowerMTA configuration version control is important and we give you some guidelines on how to implement this.

Please read below blog post for further details:
https://www.postmastery.com/powermta-configuration-version-control/

This blog post is available in French as well:
https://www.postmastery.com/fr/controle-de-version-de-configuration-powermta/

 3 
 on: February 25, 2020, 06:36:28 AM 
Started by WillemStam - Last post by WillemStam
One new thing Postmastery is particularly excited about is PowerMTA 5.0 support for forward proxies: this allows delivery from IPs which don’t need to be co-located on the same server or subnet.

In this blog post, we will explain this with a few use cases and introduce our free of charge Postmastery’s MTA proxy for a ready-to-go solution.

Please read below blog post for further details:
https://www.postmastery.com/powermta-5-0-using-a-proxy-for-email-delivery/

This blog post is available in French as well:
https://www.postmastery.com/fr/powermta-5-0-utilisation-dun-proxy-pour-lenvoi-des-e-mails/

 4 
 on: December 17, 2019, 08:20:33 AM 
Started by misit - Last post by misit
Hi guys,

recently i have noticed that some of my emails (Legitimate sends) send to Hotmail, takes a strange route.  First i can see its in the inbox (Focused folder) as a new email,  but when i reach out to open the email, it gets disappear. When checked Junk folder, emails is in there.

Does anyone come across this behavior before...?


Thanks in Advance.

Misit

 5 
 on: September 04, 2019, 10:15:48 AM 
Started by WillemStam - Last post by WillemStam
Last week (as of 26 Sept 2019), Postmastery team noticed that MX records for the domains noos.fr, numericable.com, pro.numericable.fr and numericable.fr were replaced by an SFR MX record. Please read below blog post for further details: https://www.postmastery.com/numericable-and-noos-mxs-records-moved-to-sfr-check-your-powermta-settings/.
This BLOG post is available in French as well: https://www.postmastery.com/les-enregistrements-mx-de-numericable-et-noos-changent-pour-celui-de-sfr-pensez-a-verifier-la-configuration-de-votre-powermta/

 6 
 on: June 05, 2019, 01:16:49 PM 
Started by deliman - Last post by deliman
Thanks!!  :)

 7 
 on: June 05, 2019, 03:11:23 AM 
Started by deliman - Last post by Maarten Oelering
This is a temporary error used to limit the traffic accepted from your IP. The exact cause is something only Yahoo knows, but it is probably reputation related. You should check the quality of the list, the content, complaint levels, and reputation of the IP. Volume spikes might be an issue.

 8 
 on: June 04, 2019, 10:57:23 PM 
Started by deliman - Last post by deliman
Hi

Why yahoo see: smtp;421 4.7.0 [TSS05] Messages from x.x.x.x temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3326.html ?


TSS05??

Thanks!!

 9 
 on: March 18, 2019, 09:15:31 AM 
Started by VIN786 - Last post by marksullivan
5 years later, is RepWatch still a thing?  I couldn't find it online.

 10 
 on: March 14, 2019, 07:26:37 AM 
Started by WillemStam - Last post by SyedAlam
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!!

hotmail.com does not resolve to above MX so it will not be included in above rollup queues.

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