how can I prevent zimbra to send email as root user?

Zimbra is working on Ubuntu 12.04 and there are some system users (i.e. root). Zimbra is trying to send email to itself (root@some.domain) and hangs on mailq, then prevents other mail's distribution. But I cannot stop it from sending email. I tried to use aliases file as root: /dev/null but does not work. What else can be done to do prevent this?

Solution

root@yourdomain.com is default account on many Linux distributions, and just should exists.

On that mail you are getting for example information about failed cron jobs (jobs that write to stderr) and other quite important things.

What I suggest:

create alias to Your main administrator account root@yourdomain.com in Zimbra admin panel
maybe creating ~/.forward file will be an option? here is first tutorial found on Google

External Links

External links referenced by this document:

http://www.feep.net/sendmail/tutorial/intro/forward.html

References

https://serverfault.com/questions/518283