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From: Nicolas KOWALSKI <niko@petole.dyndns.org>
To: freebsd-questions@FreeBSD.org
References: <15731983.post@talk.nabble.com>
Date: Thu, 28 Feb 2008 12:06:36 +0100
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Subject: Re: relay through gmail
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cuongvt <cuongvt@fpt.vn> writes:

> So I want to change so that when recipients received my mails and
> open them, the mail address in "from" of theses mails is
> userB@xxx.dyndns.com, not userA@gmail.com.
> Is there a way to do that?

First declare your userB@xxx.dyndns.com account as an additional
account in the Gmail interface.

Second, configure postfix to send mail from userB@xxx.dyndns.com
through gmail smtp server.

In /etc/postfix/main.cf:

smtp_sender_dependent_authentication = yes
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay
smtp_sasl_password_maps = hash:/etc/postfix/sender_relay_auth


/etc/postfix/sender_relay:

userB@xxx.dyndns.com    [smtp.gmail.com]:587


/etc/postfix/sender_relay_auth:

userB@xxx.dyndns.com    userA:password_of_userA_on_gmail


-- 
Nicolas