Zitat von Amira Othman <a.oth...@cairosource.com>:
Hi all I want to send mails to all users I have in my database and I am using postfix-2.3.3-2.3.el5_6. I am afraid that ISPs consider me spammer and add me to black list.Any one can suggest to me where to start to send mass mails and how to be protected from being considered spammer at ISP
To be a spammer or not does not depend on the technology used but how the recipient addresses are obtained. If they have opted-in you are clean, if not you are a spammer. Nothing Postfix/DKIM/SPF or whatever can do about.
Regards Andreas
smime.p7s
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