?
Solved

Sendmail not working on CentOS

Posted on 2009-07-16
4
Medium Priority
?
664 Views
Last Modified: 2013-12-18
I have a CentOS server configured with sendmail and none of my messages seem to be sent.

I am looking at the maillog fiel and see this error "Jul 16 13:38:43 fmsubbnix sendmail[1140]: n6GHcgRE001026: n6GHchRE001140: DSN: Host unknown (Name server: outgoing.earthlink.net: host not found)"

My guess is the the parameter "Name server: outgoing.earthlink.net" is incorrectly configured.   I probably need to use the company's smtp relay server.  Where is this value located?


0
Comment
Question by:gordonmann
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 29

Accepted Solution

by:
fosiul01 earned 2000 total points
ID: 24871757
can this server resolv external host ?

smart host , option would be on

/etc/mail/sendmail.mc

look for smart host options in their , and use company smtp server

define(`SMART_HOST', `smtp.your.provider')dnl


dont forget to run

make

then restart sendmail
0
 
LVL 1

Author Comment

by:gordonmann
ID: 24872056
Please define "dont forget to run make"

Thanks
0
 
LVL 29

Expert Comment

by:fosiul01
ID: 24872075
if you change any sendmail configuration

you need to execute make command

just type

make

then restart  sendmail
0
 
LVL 1

Author Closing Comment

by:gordonmann
ID: 31604343
Great -- Thanks
0

Featured Post

Percona Live Europe 2017 | Sep 25 - 27, 2017

The Percona Live Open Source Database Conference Europe 2017 is the premier event for the diverse and active European open source database community, as well as businesses that develop and use open source database software.

Question has a verified solution.

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

Are you irritated by repeating emails issue in Microsoft Outlook 2016 after recent update ?  Lets’ see how to resolve and prevent duplicate emails in the Outlook 2016 using some simple techniques.
This article outlines some of the reasons why an email message gets flagged as spam on a recipient's end.
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
Suggested Courses
Course of the Month10 days, 2 hours left to enroll

762 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