Looking for a postfix-based mail proxy/relay to be set up (or better alternative)

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Experience Level: Intermediate
Hi Abdul,

I do a lot of work with the Infusionsoft email marketing system and have some clients who have email deliverability issues where emails sent from Infusionsoft are not reaching the recipients' inbox, but emails sent from Mandrill or SendGrid to the same recipients are reaching the recipients' inbox correctly. Infusionsoft can only send via standard SMTP direct to the recipient, so I'm trying to find a way of getting the email from Infusionsoft to be sent via Mandrill or SendGrid.

I'm looking to set up a system that will act as a proxy/relay as follows: (all domains are just examples)

Infusionsoft wants to send an email to person@here.com
Instead, we tell Infusionsoft to send an email to "person@here.com"@myrelay.com

I own the myrelay.com domain which runs the proxy/relay setup using Postfix and other appropriate mail-rewriting tools.

The email is received at myrelay.com and the recipient email address is rewritten back to person@here.com

The email is then forwarded on to Mandrill via the Mandrill SMTP interface (username/password authentication would be required).

Security would need to be set up so that incoming emails were only accepted from the Infusionsoft range of IP addresses.

I need someone to be able to create an environment on my existing VPS server that fulfils the above requirements. Is this something that you'd be able to do?

I'm sure you need more information than I've already supplied and am happy to answer more questions if you need to find out more.

Many thanks,


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