> dnl # You'll need to create the file referenced here (see the comments below this listing.) > dnl # Uncomment the following line when Comcast is your SMART_HOST and authentication is required. Other mechanisms should be used if the connection is notĭnl # Please remember that saslauthd needs to be running for AUTH.ĭnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnlĭnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnlĭnl # Rudimentary information on creating certificates for sendmail TLS:ĭnl # cd /usr/share/ssl/certs make sendmail.pemĭnl define(`confCACERT_PATH',`/etc/pki/tls/certs')dnlĭnl define(`confCACERT',`/etc/pki/tls/certs/ca-bundle.crt')dnlĭnl define(`confSERVER_CERT',`/etc/pki/tls/certs/sendmail.pem')dnlĭnl define(`confSERVER_KEY',`/etc/pki/tls/certs/sendmail.pem')dnlĭnl # This allows sendmail to use a keyfile that is shared with OpenLDAP'sĭnl # slapd, which requires the file to be readble by group ldapĭnl define(`confDONT_BLAME_SENDMAIL',`groupreadablekeyfile')dnlĭnl define(`confTO_QUEUERETURN', `5d')dnl > define(`ESMTP_MAILER_ARGS', `TCP $h 587')ĭefine(`confDONT_PROBE_INTERFACES',true)dnlĭefine(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnlĭefine(`STATUS_FILE', `/var/log/mail/statistics')dnlĭefine(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnlĭefine(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnlĭnl # The following allows relaying if the user authenticates, and disallowsĭnl # plaintext authentication (PLAIN/LOGIN) on non-TLS linksĭnl # PLAIN is the preferred plaintext authentication method and used byĭnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs doĭnl # use LOGIN. > dnl # Use `' on the next line as the SMART_HOST when using Comcast
Include(`/usr/share/sendmail-cf/m4/cf.m4')dnlĭnl # default logging level is 9, you might want to set it higher toĭnl # Uncomment and edit the following line if your outgoing mail needs toĭnl # be sent out through an external mail server: If you make changes toĭnl # /etc/mail/sendmail.mc, you will need to regenerate theĭnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf package is See the comments below for details on that file.ĭnl # This is the sendmail macro config file for m4. This file contains your Comcast userid and password. In addition to modifying /etc/mail/sendmail.mc as shown below, if you're using Comcast, then you'll also have to create a the file called /etc/mail/authinfo that referenced by /etc/mail/sendmail.mc. The listing below shows a Lunarpages configuration with the two lines you'd have to change to use Comcast instead commented out. The lines I changed in /etc/sendmail.mc are marked with “>” below. So far, Lunarpages does not require authentication in oder to use port 587. To enable masquerading for root I commented out the EXPOSED_USER statement in sendmail.mc.īoth Comcast and LunarPages have blocked SMTP port 25 and require the use of SUBMISSION port 587. By default, masquerading is disabled for the root user.
I turned on masquerading in /etc/mail/sendmail.mc. I changed the default mail routing in my ISP's settings for to “:blackhole:” instead of “:fail:” so that any and all e-mail address would be accepted for that domain. They also require that the sending e-mail address exist. Configuring sendmail masquerading will allow these systems to send mail via the LunarPages' or Comcast's SMTP server.īoth LunarPages and Comcast require that the MAIL FROM: address specified during the SMTP dialog match the From: header that’s part of the message data. Neither LunarPages nor Comcast have open relays that supports this.
I have some Linux hosts in my network at home that want to send system messages using SENDMAIL and SMTP.
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