[ultimatelittlemaster]

Hello,
Is there any working method to hide server ip in outgoing mails?
I am using postfix now.

Return-Path: <apache@domain> Received: from domain ([server ip]) by mx.google.com with ESMTP id bp18si69700763wib.34.2014.12. 31.03.29.07 for <mail id>; Wed, 31 Dec 2014 03:29:08 -0800 (PST) Received-SPF: none (google.com: apache@domain does not designate permitted sender hosts) client- ip=server ip;

[Gox.]

Give the task to a 3rd party, like MailChip http://mailchimp.com ?

[Clockbit]

thank you for sharing.good to know.

[Crypto™]

Mandrill (by Mailchimp) will best suit your needs, since it's designed for transactional emails. (Emails triggered by actions) This isn't just for changing the IP, but using a service that is properly designed for the task at hand.

https://mandrillapp.com/