Problem regarding sendmail

Posted on 2002-04-29
Last Modified: 2010-04-20
I have sendmail with default settings... did not make any changes.... i can send from some other account to ... but from root neither can i send nor reply to any other user accounts on the system.
Question by:harisnshaw
LVL 40

Expert Comment

ID: 6981074
What error condition is encountered when root attempts to send mail to some other user on the system? What tool are you attempting to send the mail with?

Author Comment

ID: 6981334
i am using pine to send the mail. I get the error user unknown...
LVL 40

Expert Comment

ID: 6981783
What happens if you do 'mail -s test some-local-user'? If that works and pine doesn't, then it sounds like a problem with root's pine configuration.
U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.


Author Comment

ID: 6982786
I get the same error user unknow. If i try mail -s test root it works. But any other user it does not work
LVL 40

Expert Comment

ID: 6983621
These are linux accounts on this machine, right? By that I mean that those users can log onto the machine with their username & password.

What happens if you do 'mail -s test some-user', i.e., with out any domain specification. If that works and user@mydom.tld doesn't it could indicate that sendmail is confused about what domain it is responsible for. And that could happen if the system is configured for one domain and gets its IP via DHCP, which could result in a change in the hostname of the system.

You should be able to tell if something like that is happening by comparing the contents of /etc/hosts, what hostname returns and what a reverse lookup of your IP returns. If /etc/hosts doesn't agree with 'hostname' there'll be problems with sendmail.

Author Comment

ID: 6989482
if i try mail -s test xyz ( xyz is  a local linux user ) then nothing happends..... here is the screen shot

[Haris@sys02 Haris]$ mail -s test Haris

after that i have to press ^C then i get

(Interrupt -- one more to kill letter)

again i have to press ^C then i get back

[Haris@sys02 Haris]$

also i don't use any DHCP server...I have a static ip... my rpm is corrupted ( u only helped me with that in another question and i will reinstall the whole thing soon... )

Expert Comment

ID: 6990566
Cud u post the 1st 10 lines of ur pine config:

pine -> setup-> config
LVL 40

Expert Comment

ID: 6992250
When you use 'mail -s some-subject some-user' the mail utility expects you to type in a message and then hit ctrl-D to signify the end of the message. mail will then prompt for a Cc: and you can hit ctrl-D again. Only then will the utility actually attempt to contact sendmail to deliver the message. So a transcript of that process looks like:

chimera> mail -s test
This is a test message
Now I'll enter ctrl-D to signify end of message...
Cc: chimera>

By entering the ctrl-C's you've told mail to abort and throw the message attempt away.

Expert Comment

ID: 9089080
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
Post your closing recommendations!  No comment means you don't care.
LVL 40

Expert Comment

ID: 9105603
I'd say to refund the points as the questioner seems to have lost interest in the middle of diagnosing the problem.
LVL 25

Expert Comment

ID: 9303364
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
Please leave any comments here within the next seven days.


EE Cleanup Volunteer

Accepted Solution

PashaMod earned 0 total points
ID: 9356392
Questioner did not follow up the question so points are not refunded and question closed

CS Moderator

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Setting up static IP - Ubuntu server 16.04 12 97
Linux VM 6 101
Like to learn Linux, need advice for a good book and setup. 3 58
Run same command on multiple files in Linux 3 60
If you have a server on collocation with the super-fast CPU, that doesn't mean that you get it running at full power. Here is a preamble. When doing inventory of Linux servers, that I'm administering, I've found that some of them are running on l…
Using 'screen' for session sharing, The Simple Edition Step 1: user starts session with command: screen Step 2: other user (logged in with same user account) connects with command: screen -x Done. Both users are connected to the same CLI sessio…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question