Enable Outgoing Emails
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WARNING |
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| This is recommended only for advanced users, proceed with caution. |
Here's how to enable outgoing emails on your Amahi server
NOTE: Make sure to use copy-paste to execute those commands. In particular, they contain back-ticks as the starting string delimiter, which can be hard to find on a keyboard! Change yum to apt-get for Ubuntu.
To begin with, As root user:
Option 1 (untested on Fedora 19)
SMTP_SERVER=your_isp_smtp_server yum -y install sendmail-cf m4 cd /etc/mail sed -ie "s/.*SMART_HOST.*/define(\`SMART_HOST', \`$SMTP_SERVER')dnl/" sendmail.mc make chkconfig sendmail on service sendmail restart
Make sure to replace your_isp_smtp_server on the first line with the hostname or IP address of your ISP SMTP server.
If you need to connect to the SMTP server using port 587 (TLS/STARTTLS), you'll need to do this too:
cd /etc/mail sed -ie "s/\(.*SMART_HOST.*\)/\1\ndefine(\`RELAY_MAILER_ARGS', \`TCP \$h 587')dnl\ndefine(\`ESMTP_MAILER_ARGS', \`TCP \$h 587')dnl/" sendmail.mc make service sendmail restart
If you want to use another port than 587, change that number in the above command (it's there twice), before executing it. If you already executed it, edit the sendmail.mc file, and search for 587 - it should appear there twice - change both.
If you need to provide a username and password to use the SMTP server, you'll need to do this too:
SMTP_SERVER=your_isp_smtp_server USERNAME=your_smtp_username PASSWORD=your_smtp_password cd /etc/mail chmod 600 access echo "AuthInfo:$SMTP_SERVER \"U:$USERNAME\" \"P:$PASSWORD\" \"M:PLAIN\"" >> access makemap -r hash access.db < access sed -ie "s/.*confAUTH_MECHANISMS.*/define(\`confAUTH_MECHANISMS', \`EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl\nFEATURE(\`authinfo',\`hash \/etc\/mail\/access')dnl/" sendmail.mc make service sendmail restart
Option 2 (tested on Fedora 19)
su - yum -y install sendmail-cf mailx cp /etc/mail/sendmail.mc /etc/mail/sendmail.mc.orig vi /etc/mail/sendmail.mc
Near the very bottom before MAILER insert the following lines. Sendmail is picky about the quotation marks: when I first pasted them, they were wrong and gave me a syntax error. This section is a combination of the two sources above which fixes the error in /var/log/maillog “no route to host” which apparently has nothing to do with DNS resolution.
define(`SMART_HOST',`smtp.gmail.com')dnl define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl define(`ESMTP_MAILER_ARGS', `TCP $h 587')dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl FEATURE(`authinfo',`hash /etc/mail/auth/client-info')dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')
Then save. Back in the terminal:
mkdir /etc/mail/auth vi /etc/mail/auth/client-info AuthInfo:smtp.gmail.com "U:root" "I:<YOUR GMAIL USERNAME HERE>@gmail.com" "P:<YOU GMAIL PASSWORD HERE>"
Of course, fill out your real login info, save, and exit. The next section skips the part about the openssl certificates: I ran it, but it didn’t seen to be necessary on Fedora.
cd /etc/mail/auth makemap hash client-info.db < client-info chmod 700 /etc/mail/auth chmod 600 /etc/mail/auth/* cd /etc/mail make service sendmail restart
Finally, send a test email.
echo 'this is a test'| mail -s test_email user@example.com
If it fails, read /var/log/maillog and /var/log/messages.
