Sendmail bounce to postmaster


 
Thread Tools Search this Thread
Operating Systems Linux Sendmail bounce to postmaster
# 1  
Old 01-28-2013
Sendmail bounce to postmaster

Hello,

I am using sendmail for my mail server. Undelivered message bounce back to the postmaster with the body of the message. However, I dont want this to happen; senders should get the undelivered notification. I am not sure about the changes I have to make to the sendmail configuration for this.


thank you for your time , any suggestions are welcome

Regarsd
# 2  
Old 01-28-2013
I think the default used to do that, but hackers could exploit it to test for mailboxes. So, this setup should be only on intranet hosts, not Internet exposed ones. The rewrite rule sets in sendmail.cf are not for the weak of heart. Overview of Configuration Files Riley wrote one of their thickest books on it. Many competing mail servers with gui configuration have sprung up to compete with the default. I found a reverse tip, something maybe you can undo: Sendmail rewrites email address to send to the local machine instead? - Server Fault
Added define(LUSER_RELAY',local:root')dnl to return undeliverable mail to unknown users to root instead of to sender, per serverfault.com/questions/274211/sendmail-dsn-user-unknownsapark Oct 6 '11 at 18:51
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Solaris

Clarifying sendmail configuration - sendmail-client offline

Hi all, I have read about sendmail running as 2 separate process. 1 as a MSP, and the other as the real daemon or MTA. In my current configuration, the sendmail-client is disabled. Both submit.cf and sendmail.cf are left as default untouch I do not specified any mailhost... (3 Replies)
Discussion started by: javanoob
3 Replies

2. UNIX and Linux Applications

Sendmail

Hi All, What is Sendmail.cf? What is it's significance? (2 Replies)
Discussion started by: rafa_fed2
2 Replies

3. UNIX for Advanced & Expert Users

Sendmail questions, SCO 5.0.6 sendmail 8.11.0

I am running SCO 5.0.6 and using sendmail 8.11.0 and having issues with smtp authentication. When trying to send mail the following message will kick back. (reason: 530 5.7.1 Authentication required) 530 5.7.1 Authentication required Not sure what needs to be tweeked in sendmail.cf but I... (1 Reply)
Discussion started by: ziggy6
1 Replies

4. UNIX for Dummies Questions & Answers

qmail bounce

Hello, i seem to be facing a strange problem. I send my emails via qmail (on linux) and all the emails gets delivered to the recipient's inbox and bounces back to the sender's address and well. This happens irrespective of the recipient's email domain (gmail, yahoo, hotmail...). We recently... (0 Replies)
Discussion started by: pradeeptg
0 Replies

5. Solaris

Had to bounce interface to add network route

Hi All, yesterday I was trying to add a network route to my solaris 8 host using 'route add'. Everytime I tried, I kept getting the response 'network is unreachable'. I was trying all kinds of different methods, however I eventually got it to work after bouncing the interface that I was... (2 Replies)
Discussion started by: badoshi
2 Replies

6. UNIX for Dummies Questions & Answers

Sendmail HELP

I am trying to configure sendmail for a client. I have edited my sendmail.cf as follows: # more sendmail.mc divert(0)dnl VERSIONID(`@(#)sendmail.mc 1.11 (Sun) 06/21/04') OSTYPE(`solaris8')dnl DOMAIN(`server.1.example.com)dnl DAEMON_OPTIONS('Port=smtp,ADR=127.0.0.1, Name=MTA')... (0 Replies)
Discussion started by: Gibby13
0 Replies

7. UNIX for Dummies Questions & Answers

How to BOUNCE??

I am asked to bounce this particular service "Service1" I was told that this is about starting and stopping a service I should do this automatically automatic start then auto stop any ideas? (1 Reply)
Discussion started by: khestoi
1 Replies

8. UNIX for Dummies Questions & Answers

Help me with bounce back mails.

I have the following doubt : I login on my Unix machine as 'myid' I send out mails from this id setting the Header Properties in sendmail command. (From : g-eacctst01). I try sending mail to a wrong id. Where will the bounce back mail be stored ? How can we link the bounce back messages to... (4 Replies)
Discussion started by: Amruta Pitkar
4 Replies

9. UNIX for Dummies Questions & Answers

sendmail

When ever I start up linux the pc hangs for 10min due to send mail. Advice how do I disable or stop this from happening?:( (1 Reply)
Discussion started by: danny howell
1 Replies
Login or Register to Ask a Question