sendmail problems
 

I am having trouble getting sendmail to send mail to our email server on our internal network.


I have sendmail configured on a Fedora Core 6 machine that is on an internal 10.3.0.X network where I work. It will be used for Bugzilla to send messages to our staff for bug issues.

I can send email to my external hotmail account address, but not my internal email address.

First, I am not sure if this is correct, but I changed the hosts file to make it look like the machine is part of the internal domain.

Then, I send an email to my hotmail account via sendmail and it does work. Then, I send an email to my work email account and it never arrives. I get this in my mailbox on the sendmail server.

I tried altering the sendmail.mc file by changing the SMART_HOST line by deleting the first dn1 comment and then changed the 'smtp.your.provider" to the domain name of our email server here on site. I restarted sendmail after I made these changes, but I am still having the same issue with sending email to email addresses within the private network.

I checked the barracuda firewall on our network and I do not see anything that was blocked from my address on the sendmail server.


I believe that there is a networking issue here that I am just not understanding.

Hi,

Try adding you smart host's ip address instead or add the smart host to /etc/hosts.
I would not alter the first line in /etc/hosts at all. I would add a newline for your machine. example:

127.0.0.1 localhost localhost.localdomain
10.0.1.2 myhost myhost.domain
10.0.1.3 smarthost smarthost.domain

Try to rebuild sendmail, you didn't say if you did or not, you only said you restarted it.

Try again, and tail maillog

Go through a reboot if possible, I know it's not always needed but I have ran into a few cases with sendmail after I made changes when they would not work untill after a reboot :\

If that doesn't work post the output from the the last few lines of the failed email from the tail of maillog.

Hope it helps some, I have a few other ideas but that will start you off.

Okay...Here is my hosts file. I did not change the first line but added the others.

10.3.0.99 is the Fedora Core 6 sendmail server where sendmail and Bugzilla reside on.

10.1.0.10 is the address of the internal email server. My POP3 Outlook client pulls email from my mailbox on this server and takes it to my XP desktop.


The only thing I changed in sendmail.mc is the SMARTHOST line, which is now the following:

As you can see, I uncommented the line (removed the first dnl comment tag) and added dupagels.lib.il.us...the name of the email server.

I rebuilt sendmail with the make command and restarted senmail. Just to be sure, I also did a reboot.


However, I still cannot send mail to my work email address. My hotmail address is no problem. Here is the output in /var/log/maillog


Here is the mail root gets when I send a message to the dupagels.lib.il.us account:

I am perplexed.

I made a slight change. It seems that my hosts file is incorrect. I changed it to the following:
The host name is "FireCracker" FireCracker is not a domain.

I resent the sendmail message to my dupagels.lib.il.us account, but this time, I did not get a failed messge in my /var/mail/root mailbox. However, I got a different maillog message:

The cuda.dupagels.lib.il.us is our Barracuda Spam Filter.

Still not receiving any email from dupagels.lib.il.us address.