From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Sun Feb 03 2008 - 10:38:23 CST

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On Sun, Feb 03, 2008 at 11:14:59AM +0100, Peter Rabbitson wrote:

> I have a separate server dedicated to sending our opt-in newsletter. In the
> recent months I am starting to realize that delivery is not going very
> smooth. I would like to improve my mail delivery chances. I already have
> explicit SPF records on the server in question, but it seems I need to do
> more. I have heard there are various sender registration systems, where one
> could whitelist his IP. Is there a comprehensive list of things one should
> take to solve problems similar to mine?

[ Opt-in is not particularly meaningful if it is not confirmed opt-in. ]

If the users want the mailing, and find that it ends up quarantined, they
can whitelist you for just their account, or work with their provider to
ask for a broader whitelist. If you are getting rejected, you can work with
the provider directly to resolve the issue.

If your mail is silently discarded, then the users need a better provider,
but in practice of course you can search for "feedback loop" information
for the provider in question. Major ESPs have feedback loop programs that
are described on their websites, e.g. <http://postmaster.aol.com>.

--
        Viktor.

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