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PowerMTA 5.0r7 is out!!!!  Please contact support@port25.com for a license and download access.

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 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.

 on: November 25, 2018, 11:57:39 AM 
Started by ag - Last post by mailme
only for my interst (we are not blocked) … how do i identify spamhaus blocks?
i've never heard before the word "snowshoe"


 on: November 22, 2018, 04:49:21 AM 
Started by misit - Last post by misit
Hello Keith,

Thanks for the comment.

Yes, it looks like they are using it indeed. But how come its not showing up in my headers?  :-\



 on: November 21, 2018, 12:06:58 PM 
Started by misit - Last post by keith
Hello Misit,

According to Microsoft documentation, they do indeed use that header. Here is what I was able to dig up on this end.



 on: November 21, 2018, 11:52:36 AM 
Started by misit - Last post by misit
Hello Everyone,

Just a quick question, I have noticed the header field Outlook.com adds to there header, doesn't seems to be there anymore.

"X-MS-Exchange-Organization-SCL" Does anyone noticed this ? if so, what other options they use to mark a SPAM email?

Thanks In Advance


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