Hello Everyone:
First of, thanks for the wonderful advice and emails I
have received. You guys are GREAT!!!
So far, this is what I have gathered from feedback:
- Lyris is faster than qmail, but seems to do so at
the expense of reliabilty as its queue is lost during
the event of system crashes and its FoxPro database
can become corrupted.
- Qmail's scalability is limited if all we are running
is one machine (albeit with powerful specs). So if we
wanted to deliver 500,000 UNIQUE and personalized
emails per hour, we would need 10 qmail servers to do
the job.
Actually, based on the feedback from the qmail list
and the problem of crashing Lyris servers cauing
corrupted databases, I am leaning to go with PowerMTA
(http://www.powermta.com) which was written by the guy
who originally wrote Lsoft's LSMTP. PowerMTA stores
its queue on disk and its used by a number of email
ASPs such as Responsys and Whitehat.
The price is about $10,000 per server license, but it
would be able to send 200,000 - 500,000 messages per
hour on a single server. If this is true (we are
planning to evaluate it first), then it would be
cheaper and easier to have one larger server running
PowerMTA then to set up 10 qmail boxes (as we would
have to pay $600 per server per month at our webhost).
Has anyone worked with PowerMTA before? What was your
experience like?
Best Wishes.
PHP Webmaster
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