Sendmail masquerade


 
Thread Tools Search this Thread
Operating Systems AIX Sendmail masquerade
# 1  
Old 02-27-2013
Sendmail masquerade

I'm trying to configure sendmail masquerading and it seems like I'm having a problem with m4.

My main problem is that internally generated emails are showing up externally as originating from: internal_user@internal1.mydomain.com.
internal1.mydomain.com doesn't resolve publicly, nor should it.
I'm trying to setup my aix 5.3 box to simply send emails that show up as:
and possibly
as well.

I'm trying to add the following, to sendmail.mc
Code:
FEATURE(always_add_domain)dnl
FEATURE(`masquerade_envelope')dnl
MASQUERADE_AS(`mydomain.com')dnl
MASQUERADE_DOMAIN(`mydomain.com')dnl
MASQUERADE_DOMAIN(localhost)dnl
MASQUERADE_DOMAIN(localhost.localdomain)dnl

but when I run:
Code:
m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

the result that my cf file is overwritten with just the output of my .mc file and all the original contents of my sendmail.cf file are lost
Code:
$ cat /etc/mail/sendmail.cf
FEATURE(always_add_domain)FEATURE(masquerade_envelope)MASQUERADE_AS(mydomain.com)MASQUERADE_DOMAIN(mydomain.com)MASQUERADE_DOMAIN(localhost)MASQUERADE_DOMAIN(localhost.localdomain)

I have a backup copy of sendmail.mc, that I've restored.

should m4 just basically be doing cat on my .mc file into my .cf file?


Any help or direction would be great. Thanks


Moderator's Comments:
Mod Comment Use code tags, thanks. See PM.

Last edited by zaxxon; 02-27-2013 at 01:31 PM.. Reason: code tags
# 2  
Old 02-27-2013
You must place your sendmail.mc in the sendmail build directory.
Howto configure AIX sendmail with .mc files and m4 sais this is
/usr/samples/tcpip/sendmail/cf
Also please look for a README in /usr/samples/tcpip/sendmail
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

iptables : How to apply masquerade while pinging from DUT to outside network

My Device is connected to eth1 interface of the host and eth0 is connected to network. Now when I am pinging google.com from device after executing below commands on host sudo iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE I am... (0 Replies)
Discussion started by: slathigara
0 Replies

2. UNIX for Dummies Questions & Answers

iptables conditional masquerade

Hi everyone, I have a LAN with : 1 internet box (192.168.1.1) 1 Debian host (192.168.1.224) 3 Windows hosts (192.168.1.32/33/34) The internet box is set to route all incoming traffic to the Debian host (DMZ). Then the Debian host is set to accept certain packets and forward others... (0 Replies)
Discussion started by: chebarbudo
0 Replies

3. 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

4. UNIX for Dummies Questions & Answers

Nullmailer masquerade domain

I am using nullmailer on Ubuntu Linux to relay mails however when I send email or through cron it appear as root@myhostname.domain.com instead of root@domain.com How do I configure nullmailer so the email send appear as from root@domain.com? (0 Replies)
Discussion started by: hassan1
0 Replies

5. IP Networking

iptables nat/masquerade - how to act as a basic firewall?

edit: SOLVED - see below for solution Hi there, I've inherited a gob of Linux hosts and so am learning linux from the bottom of the deep end of the pool (gotta say I'm warming up to Linux though - it's not half bad) Right now iptables is confusing me and I could use some pointers as to how... (0 Replies)
Discussion started by: Smiling Dragon
0 Replies

6. UNIX for Dummies Questions & Answers

Sendmail masquerade

Hi, Please tell me what is sendmail masquarade and what is the use of it? Its pretty confusing :eek:.. Is it all about like when mail is sent from sender to receiver, the receiver cannot see the hostname/internal username of sender.. And I found they constitute various classes like class... (0 Replies)
Discussion started by: Priya Amaresh
0 Replies

7. IP Networking

iptables: log connection after SNAT/MASQUERADE command

Hello! I have the following problem with iptables in Debian 6: My server works as a router and it needs to log server external IP+port for all outgoing connections. But after command SNAT or MASQUERADE traffic is "lost". I mean no following rules can catch those traffic. Everything looks... (0 Replies)
Discussion started by: unlimited
0 Replies

8. UNIX for Advanced & Expert Users

sendmail/mail masquerade problem

I have a SCO 5.06 box running sendmail 8.11. I have set up sendmail to masquerade the domainname as bar.com. ie in the sendmail.cf file the directive DMbar.com is set. When I send mail using mail/mailx, it appends the local hostname "foo" to the masquerade address and inserts this into... (1 Reply)
Discussion started by: m.szylkarski
1 Replies

9. IP Networking

Ftp'ing thru a Iptables NAT Masquerade

Greetings to all. My new firewall is giving me one hell of a problem. I'm running iptables and masquerading my intranet thru NAT. But here is the problem. Whenever I try to FTP to a server outside of my lan I get a 500 illegal port error. I've come to the conclusion that NAT is... (2 Replies)
Discussion started by: phrater
2 Replies
Login or Register to Ask a Question