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Old 06-21-2018, 03:16 PM   #1
mfoley
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Sendmail, why am I not getting FQDN in email address with masquerading off?


I have a host at myhost.mydom.org. I do not have any of the masqerading features turned on in the sendmail.mc file. Yet, when I send a message from a user on this host the sees the from address as user@mydom.org. I am expecting the from address to be user@myhost.mydom.org. Why am I not seeing this?

Yes, I regenerated the /etc/sendmail.cf from the .mc and yes, I restarted sendmail.

The email client is mailx and there is no "set from" in the .mailrc or /etc/nail.rc files.

Last edited by mfoley; 06-21-2018 at 03:20 PM.
 
Old 06-21-2018, 03:21 PM   #2
scasey
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How are you sending the mail? That is, what command or program are you using to send the mail? e.g.: mailx, Thunderbird, etc.
...asked as you answered...

Please show the exact mailx command you used.
What does
Code:
hostname
return?

Last edited by scasey; 06-21-2018 at 03:26 PM.
 
Old 06-22-2018, 02:52 AM   #3
bathory
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Quote:
Originally Posted by mfoley View Post
I have a host at myhost.mydom.org. I do not have any of the masqerading features turned on in the sendmail.mc file. Yet, when I send a message from a user on this host the sees the from address as user@mydom.org. I am expecting the from address to be user@myhost.mydom.org. Why am I not seeing this?

Yes, I regenerated the /etc/sendmail.cf from the .mc and yes, I restarted sendmail.

The email client is mailx and there is no "set from" in the .mailrc or /etc/nail.rc files.
If it's not masquerading, it could be that you're using genericstable to rewrite the From: address.
 
Old 06-22-2018, 12:47 PM   #4
mfoley
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Quote:
Originally Posted by scasey View Post
Please show the exact mailx command you used.
What does
Code:
hostname
return?
The exact command is simply 'mail user@thatdom.com'. 'hostname' returns "webserver" (the name of this host).
Quote:
Originally Posted by bathory View Post
If it's not masquerading, it could be that you're using genericstable to rewrite the From: address.
I have no genericstable. However, I do have a smart host defined. The smarthost does have masquerading defined. Could that be it? If so, what if on the smart host I defined:
Code:
EXPOSED_USER(`useridOnOtherHost`)
 
Old 06-22-2018, 04:07 PM   #5
bathory
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Quote:
I have no genericstable. However, I do have a smart host defined. The smarthost does have masquerading defined. Could that be it? If so, what if on the smart host I defined:

EXPOSED_USER(`useridOnOtherHost`)
Alright, so the rewrite happens on the smarthost.
Use the EXPOSED_USER as above in the smarthost's sendmail.mc, recreate sendmail.cf, restart sendmail and test.
 
Old 06-24-2018, 10:13 AM   #6
mfoley
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Bingo! That did the trick!
 
  


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