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How many IP addresses do I need to send emails?

8 Comments / PowerMTA / By pmta

I often get asked, how many IP addresses do I need to successfully inbox. There is no one-size-fits-all approach, unfortunately. PowerMTA is brilliant when it comes to handling multiple IP addresses for your sending needs. I have seen PowerMTA setups and configs where the client used over 200 IP’s in order to relay 100-150k emails …

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Gmail Image tracking changes: Oempro fix

1 Comment / Oempro / By pmta

Gmail recently made a fundamental change to how they serve images. Gmail now serves images through a proxy and caching the image to speed up things and to reduce server load times. This is all great, however, this is a problem for ESP’s, as this will no longer reveal how many times and when a …

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How to speed up your Oempro Database

Leave a Comment / PowerMTA / By pmta

Oempro uses MyISAM as the Database structure. We all know that Oempro is not the fastest when it comes to Database queries. In order to speed up the queries we have to convert MyISAM tables to InnoDB. This will give you a huge speed improvement and take a lot of load of your CPU. Depending on your server …

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Use a PuTTY ppk file on Mac OSX

Leave a Comment / MAC OSX / By pmta

If you’re reading this you probably are using a Mac and are trying to connect to your server via ssh using a ppk file from PuTTY. In the example below we use the build-in ssh client Terminal. Lets get started Your PuTTY ppk generated files need to be converted to OpenSSH files. This can only …

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Send bounces from powermta back to interspire

5 Comments / PowerMTA / By pmta

I have had a few requests from clients that use interspire with a rotating IP script and then switched over using Interspire with powerMTA. They all ran into the same issue – Bounce notifications were not being sent back to the bounce address interspire used. In order to send bounces back to Interspire that occur …

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Multiple DKIM records in powermta

11 Comments / PowerMTA / By pmta

Creating multiple DKIM records in powermta can be somewhat confusing, especially when trying to include everything into one config without using external config files.

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