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Help refining Postfix Email SMTP Configuration in Linux Centos 6 Server
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IT & Programming > System Administration

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Apr 14, 2014
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  • Posted: Sun, Mar 30, 2014
  • Time Left: Closed
  • Location: Anywhere
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  • Start: Immediately
  • Hourly Rate: Not Sure
  • Hrs/wk: Not Sure | Duration: Not Sure
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Hi :)
I have a web app that communicates with its users sometimes via Emails.
Individual emails work perfect, but i also need to send a newsletter to the thousands of users every few weeks. And that gives me many problems. When i send bulk emails from my server to my users (all of which have opted in of course), i get in the postfix email log different errors and problems (These don't seem to ever happen when i send a single email, its only when i send many emails)

- I have Reverse DNS PTR record correctly set to the domain
- I also have SPF record set with domain registry
- Also my domain has an SSL certificate installed as well
and the IP of the domain is a dedicated IP
- My Server is Centos 6.5 with Plesk 11.5, i am currently using PHPMAILER php library to send the emails, it is i think using the mail function to send at the moment and postfix is behind


And yet i get different error messages like these in the postfix log:

My log is in
/usr/local/psa/var/log
and i can do tail...

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