Martin Allan Jensen wrote:
Hi all,
The company I work for have approximately nine mail servers, including
Postfix, qmail, sendmail and exim.
They would like to make ONE SMTP relay host server so that all their
customers can use their SMTP server to send mail through.
The customers already get their incoming mail through their mail servers.
I fail to see a way to make this possible without creating an entirely
open relay, or creating a database with usernames and passwords and
use SASL.
Does anybody know if it is possible to make the SMTP host contact the
mail server and verify that the sender email exists on their incoming
mail server? Or is there another setup recommended?
I tried google a lot, but I can't seem to find anything that points me
in the right direction - someone else surely must have run into this
scenario before?
Looking forward to hear from you, a link, or even some rough notes
would be nice.
Thank you very much...
--
Martin
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Q. Why nine email servers? Can you not make a case to rationalise to one
email server with a hot/warm/cold spare, and use an
http://workaround.org/ispmail type setup or Zimbra.
Regards
Justin
