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how to relay mails from zimbra

hi friend,
i had configured postfix in ubuntu. now i am configuring zimbra. i have to relay mails from smtp6.mail.pw so i edited mai.cf

 vi /opt/zimbra/postfix/conf/main.cf

relayhost = smtp6.mail.pw

and saved it when i reboot my zimbra machine relayhost is empty how to fix this.

second like in postfix v create sasl authentication i.e sasl_passwd

how to create sasl_passwd for authentication in zimbra.
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2 Solutions
madunixChief Information Security Officer Commented:
check zimbra wiki http://wiki.zimbra.com/index.php?title=Main_Page  and search "mail relay"

pawanopensourceAuthor Commented:
hey i logged in through admin console and than under GLOBAL SETTING there is a tab MTA and in that there is Relay MTA for external delivery: (here i gave my relay address)  now when i am sending email like
from dipesh@tm.local to pawan.lal@gmail.com i get this error message

The mail system

<pawan.lal@gmail.com>: host smtp1.mail.pw[] said: 554 5.7.1
    <pawan.lal@gmail.com>: Relay access denied (in reply to RCPT TO command)

i think i had done mistake in sasl_passwd, plz guide me so that i can rectify this error and start relaying mails.

That server (smtp1.mail.pw) probably requires authentication to relay. Check this page on how to set that up:

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pawanopensourceAuthor Commented:
Enabling SMTP authentication

Create a text file mapping which name/password should be used for each given outbound destination:

echo mailrelay.example.com username:password > /opt/zimbra/conf/relay_password

Create a postfix lookup table:

postmap hash:/opt/zimbra/conf/relay_password
postmap command is not working can u plz gide.
You can set all of this up in the admin console, without having to go through the files manually you know. Just aim your browser at https://yourzimbraserversdomain.com:7071/zimbraAdmin

It should be under Configuration, Global Settings, MTA...

pawanopensourceAuthor Commented:
friend i had already done that way only by global setting MTA. problem is with while i creating sasl_passwd files authentication is getting fail thats why mails r not relaying.

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