HOW TO: Relay/Send email from websites, Server Monitor in OS 10.5 Server

Question

If you don't want to run your own mail server or configure DNS on your Xserve, but you still want your website or applications like Server Monitor to send email notifications; this is what you need to do:
Scenario: Mac OS 10.5.2 Leopard - Advanced Configuration - Setup is for strictly sending emails through SMTP, routed through your ISP or another provider. This is not for receiving emails.
-Open up Server Admin
If you have yet to add in a server to admin, you need to do so. Resource PDFs on setting up OS X Server are available at Apple http://www.apple.com/server/macosx/resources/ and there are video tutorials at http://movielibrary.lynda.com/html/modPage.asp?ID=373
-Click on your server, then choose the Settings button
-Then choose Services from the Tabs/Buttons below
-Select the Mail checkbox and then hit Save
-Now choose the newly added Mail service in the left pane, then click the Settings button up top
-Start with the Advanced tab. Under Security, un-check everything and don't use SSL unless you want to. You don't need to mess with the other sub-tabs here.
-Next choose the Logging Tab. Under SMTP log level, choose debug so you will be able to see what goes on in the log.
-Mailing List, Quotas and Filters tabs can go untouched. You can mess with them later if you want.
-Click the Relay tab. It is a good idea to only accept relays from your local machine. If you uncheck this, I believe it leaves you with an open relay that anybody can access.
-Now for the General Tab. Under Domain Name put anything you want. Any made up name and extension is fine.
Under Host Name, again put anything you want.
Un-check Enable POP, Un-check Enable IMAP - Basically un-check everything
Check or leave checked Enable SMTP
Now check Relay outgoing mail through host:
Then enter your hosts SMTP server. ex. smtpout.secureserver.net
Now check Authenticate to relay with user name: and enter your username and password
-Now hit the Save button
-Now we need to take a look at the main.cf file and add a few things
-If you aren't showing all files in Finder already, open up Terminal.app
Now type in: defaults write com.apple.Finder AppleShowAllFiles True
Hit enter
Now type in: killall Finder
Now Finder should reset and all files should be visible - To hide all files, do the same thing but type False
-Now open Macintosh HD and navigate to /private/etc/postfix/main.cf (Note: you won't be able to open and edit this in TextEdit. I recommend a program like TextWrangler http://www.barebones.com/products/textwrangler/download.shtml )
-Once you have main.cf open, all your settings should be together at the bottom of the doc. Scroll down. You will need to add in a few lines and verify all the settings are exactly as below (except of course your own names and SMTP server):
readme_directory = /usr/share/doc/postfix
mydomain_fallback = anything.anyting
messagesizelimit = 0
myhostname = anything.anything
mailbox_transport = cyrus
mydomain = anything.anything
mailboxsizelimit = 0
enableserveroptions = yes
inet_interfaces = all
relayhost = smtpout.secureserver.net
smtpsasl_passwordmaps = hash:/etc/postfix/sasl/passwd
smtpsasl_authenable = yes
smtpdsasl_authenable = no
smtpsasl_securityoptions =
smtpduse_pwserver = no
smtpdrecipientrestrictions = permitmynetworks,reject_unauthdestination,permit
smtpdpw_server_securityoptions = none
-Now save the main.cf document
-Now go back to Macintosh HD and navigate to /private/etc/postfix/sasl/passwd
Open passwd with TextWrangler or you editing app, and verify that your SMTP server, username and password are correct. It should look something like this:
smtpout.secureserver.net [email protected]:password
-This should be what you entered in Server Admin when you first started. If all is well, quit your editing app.
-Now, while you are still at /private/etc/postfix/sasl/passwd you need to edit permissions for passwd
You can chmod in Terminal.app or secondary click on passwd and "Get Info"
Click the lock and enter your password to unlock the settings
Next click the + button and add yourself and Admin
-Now you can close out of everything and go back to Server Admin
-Hit the Reload (twisty arrow) button at the bottom and once everything is reloaded, hit Start Mail
-Now type localhost in your browser to see if your website can send email. You can also open up other apps such as Server Monitor and do something to change the status to have it send an email.
-You can click on Mail in the Server Admin and then view the SMTP log. As long as emails are being sent and then removed from the queue, you are in good shape. If you are getting an SASL error or mechanism error, open up main.cf and verify your settings and/or check permissions on passwd file

Answer 1

Don't you need the Mail service running to have apps like Server Monitor send email notifications? - Also for hosted sites that use the sendmail function you need a service running to get the emails sent.
Really you are not hosting a Mail server. It is open, but there is no incoming and if you only accept SMTP relays from the local machine, there should be no issues.