Thanks for the Answer...

Please mention which information you required....

Error is as below

<user@oppositionsdomain.com>: host mail.oppositionsdomain.com[xxx.xxx.x.xxx] said: 550
5.7.1...

Hello

When I send a message to one of address I getting below error.

<user@example.com>: host mail.example.com[xxx.xxx.xxx.xxx] said: 550
5.7.1 <user@example.com>... we do not relay
...

Hello

I've just implement ZCS 7.2 64bit in centos 6....

Its working fine and I've made a backup script who send mail to admin person after backup done.

Here is the issue that I cant use...

I'm too confusion in this thing...

restrict few users from sending and receiving emails from external domains. They should be allowed to send email to the same (single) corporate domain.

...

May be the method is wrong....

I used this "RestrictPostfixSenders"

RestrictPostfixSenders - Zimbra :: Wiki


Even though User can send mail.

Sorry For the Confusion

I'm Using "Release 7.0.0_GA_3077.RHEL5_64_20110127201852 CentOS5_64 FOSS edition."


Yes I want to restrict user who cant send mail. Means he can only receive mails
...

Hello

Since 3 days I'm searching for the user restriction.

User cant mail to anybody, he can only receive.

Is that possible? if yes how?

Please help me.

Hello

I'm using ZCS 6.0.

Is it possible to apply various attachment policy for various users?