How do I configure sendmail to block all OUTGOING mail FROM one userid TO the world?


 
Thread Tools Search this Thread
Operating Systems Solaris How do I configure sendmail to block all OUTGOING mail FROM one userid TO the world?
Prev   Next
# 1  
Old 03-12-2010
How do I configure sendmail to block all OUTGOING mail FROM one userid TO the world?

Hello,

ENVIRONMENT:
OS: Solaris 10
Sendmail: 8.13.8+Sun

BACKGROUND:
We had a user account that was compromised and was used as a relay. She sent out (or would have if we didn't kill sendmail) ~10K emails alerting people they just won $75K.

The target for this spam was everyone internal to our company and EVERYONE with an @aol.com address, maybe other domains as well, we just stopped looking. Stopping all mail for our company until we took her offline was not a suitable solution.

QUESTION:
Is it possible to configure sendmail as to block ALL OUTGOING email from ONE user? I don't want to shut down mail for the entire organization again. I've seen solutions on how to block INCOMING and how to block outgoing TO targets, but not how to block ALL OUTGOING FROM the sender.

Any help would be greatly appreciated.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. HP-UX

Sendmail changes userid in Return-Path

Hi, sendmail on our hp-ux box is changing the userid of the from address. I have searched the web and read the man pages but can't stop this from happening. We have a process which creates a text file we pass into sendmail. In the text file we write for example: Return-Path:... (4 Replies)
Discussion started by: rsmitherscorp
4 Replies

2. UNIX for Dummies Questions & Answers

Configure sendmail to Only send mail to one domain

On both Solaris 10 and RHEL, we would like to configure sendmail in such a way that the email sent from the server should only go to a particular domain. For eg. We want our server to ONLY send the mail to <user_name>@abc.com. All other domains should be blocked/restricted. The server should not... (0 Replies)
Discussion started by: sk2code
0 Replies

3. UNIX for Advanced & Expert Users

AIX - Sendmail - add hostname to subject of outgoing mail

Hello, I'm configuring sendmail on an AIX 7.1 server (bos.net.tcp.client 7.1.1.15). I've gotten sendmail to send mail through our Novell GroupWise server, so that mail from a user on the server appears to come from their GroupWise account, and replies to the email would go to their GroupWise... (0 Replies)
Discussion started by: eyebeam
0 Replies

4. UNIX for Advanced & Expert Users

need to configure mail setting to send mail to outlook mail server

i have sun machines having solaris 9 & 10 OS . Now i need to send mail from the machines to my outlook account . I have the ip adress of OUTLOOK mail server. Now what are the setting i need to do in solaris machines so that i can use mailx or sendmail. actually i am trying to automate the high... (2 Replies)
Discussion started by: amitranjansahu
2 Replies

5. UNIX for Dummies Questions & Answers

How to auto CC all outgoing e-mail?

I'm using Debian 5.0.4, exim4 and mutt. I would like all outgoing mail sent by any/all users CC (not BCC) to a specified e-mail account. (I do have it working for BCC using 'unseen'.) I have spent hours of searching/reading/testing how and have not been able to find out how. I have seen it... (0 Replies)
Discussion started by: mewbie
0 Replies

6. UNIX and Linux Applications

Sendmail outgoing email rate

Does anyone know what's Sendmail outgoing email rate? e.g. 1000 outgoing email per minutes. If so, can we modify it? Thanks. :) (1 Reply)
Discussion started by: sunmagic2003
1 Replies

7. UNIX for Dummies Questions & Answers

Disable Outgoing Mail

I have a Solaris 2.6 server running sendmail (Version 8.9.3p2). It actually receives email and runs the sendmail process. I need to configure it so that it continues to receive email, but disable its ability to send email out. My initial ideas was to just rename the mail and mailx binaries. But... (0 Replies)
Discussion started by: Rosko
0 Replies

8. UNIX for Dummies Questions & Answers

Need help for configuring outgoing mail in Solaris 9

G'day, I've a solaris 9 box that I want to configure so that users can send out mails to internet. How can I do it? Can someone pls list me the steps or direct me to a detailed website. Thanks in advance. (1 Reply)
Discussion started by: Albert J.
1 Replies

9. UNIX for Dummies Questions & Answers

Hi plz How to configure my sendmail or mail commands???

Hi my freinds , I have RH7.2 I want to send E-mails from the prompt terminal where should I configure POP3 or SMTP also I want to access My hotmail .....I can't access it from MSN site when I write mail command in the prompt I can't send the mail hoow to send it to the root for example also... (7 Replies)
Discussion started by: atiato
7 Replies

10. UNIX for Dummies Questions & Answers

Sendmail outgoing mail only setup.

Hi. I need to set up sendmail so that it can send mail to a mail relay. I have never touched sendmail before so I am not sure how to do this. All incoming mail is directed to a different server - this is just to enable me to get mail out. Running Solaris 8 on Sparc. Many thanks, ... (6 Replies)
Discussion started by: warrend
6 Replies
Login or Register to Ask a Question
check-permissions(1M)					  System Administration Commands				     check-permissions(1M)

NAME
check-permissions - check permissions on mail rerouting files SYNOPSIS
/usr/sbin/check-permissions [login] DESCRIPTION
The check-permissions script is intended as a migration aid for sendmail(1M). It checks the /etc/mail/sendmail.cf file for all configured alias files, and checks the alias files for :include: files. It also checks for certain .forward files. For each file that check-permis- sions checks, it verifies that none of the parent directories are group- or world-writable. If any directories are overly permissive, it is reported. Otherwise it reports that no unsafe directories were found. As to which .forward files are checked, it depends on the arguments included on the command line. If no argument is given, the current user's home directory is checked for the presence of a .forward file. If any arguments are given, they are assumed to be valid logins, and the home directory of each one is checked. If the special argument ALL is given, the passwd entry in the /etc/nsswitch.conf file is checked, and all password entries that can be obtained through the switch file are checked. In large domains, this can be time-consuming. OPERANDS
The following operands are supported: login Where login is a valid user name, checks the home directory for login. ALL Checks the home directory of all users. FILES
/etc/mail/sendmail.cf Defines environment for sendmail /etc/mail/aliases Ascii mail aliases file ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsndmu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
getent(1M), sendmail(1M), aliases(4), attributes(5) SunOS 5.11 10 Nov 2003 check-permissions(1M)