Saturday, 10 January 2009
Sending E-Mail Using Sendmail Without A DNS Server
I was struggling with this issue, until I found this post.
If you're building your server in a DMZ without a DNS server, your first step is to update the Smart Host entry (listed as DS on the sendmail.cf file or SMART_HOST in the sendmail.mc file) to show the following
DSsmtp:[123.123.123.123]
OR
dnl define(`SMART_HOST',`smtp:[123.123.123.123]')
Update: 2009-02-09
While trying to implement this on a box, I've noticed that there's a slight addition to make. You'll also need to make this change in the submit.cf file if you're editing the cf files directly.
If you want your e-mails to come from a specific DNS name, search for the line beginning Df (which will probably be commented out) and make your hostname show in there. (This hint found here)
If you're building your server in a DMZ without a DNS server, your first step is to update the Smart Host entry (listed as DS on the sendmail.cf file or SMART_HOST in the sendmail.mc file) to show the following
DSsmtp:[123.123.123.123]
OR
dnl define(`SMART_HOST',`smtp:[123.123.123.123]')
Update: 2009-02-09
While trying to implement this on a box, I've noticed that there's a slight addition to make. You'll also need to make this change in the submit.cf file if you're editing the cf files directly.
If you want your e-mails to come from a specific DNS name, search for the line beginning Df (which will probably be commented out) and make your hostname show in there. (This hint found here)
Labels: Hints and Tips, Linux, Migrated From Trac Wiki, Sendmail
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