UNIX for Beginners Questions & Answers

On Red Hat Enterprise Linux Server release 6.8.

I am to get the email from my LINUX box on gmail account but it fails on company domain.
getting status=sent for gmail. BUT

getting below error for company domain:

Code:

status=bounced
#5.1.8 Domain of sender address <root@xxxx.com> does not exist (in reply to MAIL FROM command))

-- Please help

Hi,

There are so many things that could be going on here. I'm guessing that you're attempting to send e-mail from your own Linux box, using its own local MTA (Postfix, sendmail, etc), and that when you try to send e-mail to your GMail account you get these bounce messages.

Again this is a pure guess since you've not really given us much to go on here, but if (for example) your Linux box has a hostname of foo.company.com, and you're logged in or otherwise running as 'root' at the time, then mail you send from the command line or otherwise directly through your own MTA will go out as 'root@company.com'.

Now, GMail (and many other mail services besides) tend to do all kinds of checking on incoming e-mail to determine whether or not it's valid. One of these checks can be to determine if the apparent e-mail address the sender is sending as actually exists. Now, if your company doesn't have an e-mail address called 'root@company.com' it will fail this check, and GMail will bounce the mail.

Note that if this is what is happening then this is 100% correct and valid behaviour. You almost certainly don't want to be sending mail out from your workstation as 'root@company.com'. Instead, in whatever script or command or program you're sending your mail, you need to set a valid 'From:' address to use instead. That way, mail has a better chance of going out succesfully.

Also, if your company has an e-mail gateway for sending outbound mail from, configure your own local MTA (Sendmail, postfix, etc) to be a smart relay, instead passing all its own local mail to that relay. Or just directly send out to that corporate mail relay instead, rather than submitting e-mail locally. That would be best practice in general, if you have such a facility to make use of.

Hope this helps.

Thank !! but I can receive the email on gmail account but not company account from the same server.!!

Hi,

OK. Well, the explanation could be the same. In fact it would make even more sense that your own company's mail servers would reject the mail, if it is being sent as 'root@company.com' and that address does not exist or you don't have permission to use it.

Where is the bounce report actually coming from - as in, from what mail server ? Are you sending the bounced mail using a desktop client like Thunderbird or something similar, or by command-line use of mail, mailx, sendmail, etc ? Also, regardless of what you're using to send, are you setting a valid "From:" address that actually exists ?

Thanks....Yes , I am using mail and sendmail utility from CLI mode, and the logs , I am getting from /var/log/maillog.

I am in with root user and send the both mail from the same root user , one is working and another not, don't know how it could be a permission problem. Please explain it.

Hi,

OK. The two main questions I asked still stand: where are the bounce reports coming from, and are you setting a valid "From:" address ? As previously mentioned, it's very unlikely indeed that root@ is a valid e-mail address for your domain, and so your own company mail servers are almost certainly rejecting your mail because of that.

Got bounce report from /var/log/maillog. and could you please let me know know to check valid address on this server. as I am new on mail server.