Mass Emailing, best practices [duplicate]

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Possible Duplicate:

Avoid being blocked by web mail companies for mass/bulk emailing ?

Hi All,

Actually, we need to send a thousands of email for a customer that we work and we have to build that system inhouse because of security reasons. So I cannot use external mailing tools.

After some research about the topic, I came up with that I can send the mails to a local mail ser开发者_开发百科ver that I manage. This can be probably hmail server I guess?

Another aspect is pickup directory, i found out that it can be used to look at messages on fileserver.

What can be the other best practices I should now?

Any help would be appreciated.

Thanks

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Personally, I would set up my own web server, configure it for outbound messages throttling (so you won't send 5k e-mails to the same recipient [e.g. Hotmail] at the same time and get blacklisted) and pass the messages to it (as you like, since it's in your own network you shouldn't incour in performance issues, just go with SMTP connection and you should be fine).

Be sure of the addresses you're writing though, because you can get reported for spamming if the recipients did not authorized your client to use their address and report you, and your IP address would be blacklisted.

And make sure your mail server is properly configured (FQDN, reverse DNS, SPF and such) so you maximixe the chance of your messages to be delivered.