9 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
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
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2. UNIX for Dummies Questions & Answers
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)
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Then the Debian host is set to accept certain packets and forward others... (0 Replies)
Discussion started by: chebarbudo
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3. Solaris
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
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
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5. IP Networking
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
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6. AIX
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.... (1 Reply)
Discussion started by: aix_user1
1 Replies
7. IP Networking
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
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
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
LEARN ABOUT OPENSOLARIS
sendmail
sendmail(4) File Formats sendmail(4)
NAME
sendmail, sendmail.cf, submit.cf - sendmail configuration files
SYNOPSIS
/etc/mail/sendmail.cf
/etc/mail/submit.cf
DESCRIPTION
The sendmail.cf and submit.cf files are the configuration files for sendmail(1M). Starting with version 8.12 of sendmail, which was shipped
with version 9 of the Solaris operating system, two configuration files are used for submission and transmission of mail, instead of only
sendmail.cf, as before. These are:
sendmail.cf Remains the principal sendmail configuration file. Used for the Mail Transmission Agent (MTA).
submit.cf Used for the Mail Submission Program (MSP). The MSP is used to submit mail messages. Unlike the MTA, it does not run as an
SMTP daemon.
The MSP does not require root privileges, thus the two-file model provides better security than the pre-sendmail 8.12 model, in which the
MSP ran as a daemon and required root privileges.
In the default sendmail configuration, sendmail uses submit.cf, as indicated in ps(1) output. In ps output, you will observe two sendmail
invocations, such as the ones below:
/usr/lib/sendmail -Ac -q15m
/usr/lib/sendmail -bd -q15m
The first indicates the use of submit.cf, with the client queue (/var/spool/clientmqueue) being checked--and, if needed, flushed--every 15
minutes. The second invocation runs sendmail as a daemon, waiting for incoming SMTP connections.
As shipped, sendmail.cf and, in particular, submit.cf, are appropriate for most environments. Where a knowledgeable system administrator
needs to make a change, he should use the following procedures.
For sendmail.cf:
1. Change directories to the directory that contains the source files for the configuration files.
# cd /etc/mail/cf/cf
2. Create a copy of the sendmail file for your system.
# cp sendmail.mc `hostname`.mc
3. Edit `hostname`.mc. Make changes suitable for your system and environment.
4. Run make to generate the configuration file.
# /usr/bin/make `hostname`.cf
5. Copy the newly generated file to its correct location.
# cp `hostname`.cf /etc/mail/sendmail.cf
6. Restart the sendmail service.
# svcadm restart sendmail
You must restart sendmail for sendmail.cf file changes to take effect, as indicated in step 6. Steps 4 - 6 can be automated. See Automated
Rebuilding of Configuration Files below.
For submit.cf:
1. Change directories to the directory that contains the source files for the configuration files.
# cd /etc/mail/cf/cf
2. Create a copy of the submit file for your system.
# cp submit.mc submit-`hostname`.mc
3. Edit submit-`hostname`.mc. Make changes suitable for your system and environment.
4. Run make to generate the configuration file.
# /usr/bin/make submit-`hostname`.cf
5. Copy the newly generated file to its correct location.
# cp submit-`hostname`.cf /etc/mail/submit.cf
You do not need to restart sendmail for changes to submit.cf to take effect. Steps 4 and 5 can be automated. See Automated Rebuilding of
Configuration Files below.
Enabling Access to Remote Clients
The sendmail(1M) man page describes how the config/local_only property can be set to true or false to disallow or allow, respectively,
access to remote clients for unmodified systems.
Setting values for the following properties for the service instance svc:/network/smtp:sendmail results in automated (re)building of con-
figuration files:
path_to_sendmail_mc
path_to_submit_mc
The values for these properties should be strings which represent the path name of the .mc files referred to in steps 2 and 3 of both pro-
cedures above. Recommended values are:
/etc/mail/cf/cf/`hostname`.mc
/etc/mail/cf/cf/submit-`hostname`.mc
Each property, if set, results in the corresponding .mc file being used to (re)build the matching .cf file when the service is started.
These properties persist across upgrades and patches. To prevent a patch or upgrade from clobbering your .cf file, or renaming it to
.cf.old, you can set the desired properties instead.
FILES
/etc/mail/cf/README Describes sendmail configuration files.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsndmr |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
SEE ALSO
make(1S), ps(1), sendmail(1M), svcadm(1M), attributes(5)
System Administration Guide: Network Services
SunOS 5.11 8 May 2008 sendmail(4)