On Sat, May 18, 2013 at 11:24:27AM -0700, Umar Draz wrote:
> We have created a Frontend software for sending emails, we want to send
> emails in bulk.
>
> From that frontend software we will just pass
>
> from address: e.g., m...@example.com
> and smtp server: which is definitely our server
> and to address: (a loop of address around 500,000)
>
> Now we want above 500,000 emails should deliver through 4 SMTP relays
> through our Postfix email server.
>
> the from address will be m...@example.com
Who operates the SMTP relays? From your earlier description these
4 four relays have username + password login access, which sounds
like mail submission services for end-users operated by ISPs, not
bulk mail delivery services for businesses.
It would be unwise to try to deliver 500,000 email messages through
4 user accounts intended for people typing a few email messages a
day sent to one correspondent or a group of friends.
--
Viktor.
