2

When I send a mail via php mail then postfix rewrites the from address like this.

For example:

From: info@mydomain

The from becomes: username@myhosthame

How can I stop this from happening? I want postfix to preserve the from address.

1

To fix the domain, you have to set the myorigin paramater in main.cf. It defaults to myhostname.

As to why the user is rewritten, by default local_recipient_maps is set to only allow mail from users with an account on the machine, or a defined alias. From main.cf.default:

local_recipient_maps = proxy:unix:passwd.byname $alias_maps
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  • Thx, setting myorigin = $mydomain works. I am halfway there. I am just trying to figure out now how to replace "username" with ïnfo, so I get the "info@mydomain" email instead of "username@mydomain" – giorgio79 Aug 29 '13 at 4:00
  • Found this cyberciti.biz/tips/… – giorgio79 Aug 29 '13 at 6:15

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