Question
Ubuntu PHP sendmail not working or non-existent
Have the Ubuntu LAMP going (using the IP address, no domain in place because I'm just using this for development testing -- also, I haven't added anything to /etc/hosts {see below--bottom}) but just discovered that emails set from PHP using the "mail()" function are not arriving. I'm using the same function/code that I've used successfully, before, on other servers (managed hosting such as Hostgator and GoDaddy). Php.ini has the following config:
sendmail_from no value
sendmail_path /usr/sbin/sendmail -t -i
SMTP localhost
I looked for "sendmail" at /usr/sbin and didn't find it. Then I searched for "sendmail" -- nothing, so I searched for "*mail*" and got:
./usr/lib/mime/mailcap
./usr/lib/w3m/cgi-bin/w3mmail.cgi
./usr/lib/rsyslog/ommail.so
./usr/lib/gnupg/gpgkeys_mailto
./usr/lib/python2.7/mailbox.py
./usr/lib/python2.7/mailbox.pyc
./usr/lib/python2.7/mailcap.py
./usr/lib/python2.7/mailcap.pyc
./usr/bin/mail-touchlock
./usr/bin/mail-lock
./usr/bin/mail-unlock
./usr/bin/run-mailcap
./usr/share/doc/w3m/ja/README.mailcap
./usr/share/mime/application/vnd.stardivision.mail.xml
./usr/share/mime/message/x-gnu-rmail.xml
./usr/share/man/man7/mailaddr.7.gz
./usr/share/man/man5/mailcap.5.gz
./usr/share/man/man5/mailname.5.gz
./usr/share/man/man5/mailcap.order.5.gz
./usr/share/man/man8/pam_mail.8.gz
./usr/share/man/man1/ftpmail.1.gz
./usr/share/man/man1/run-mailcap.1.gz
./usr/share/locale-langpack/en_AU/LC_MESSAGES/mailman.mo
./usr/share/locale-langpack/en_AU/LC_MESSAGES/fetchmail.mo
./usr/share/locale-langpack/en_GB/LC_MESSAGES/mailman.mo
./usr/share/locale-langpack/en_GB/LC_MESSAGES/fetchmail.mo
./usr/share/ca-certificates/mozilla/UTN_USERFirst_Email_Root_CA.crt
./lib/i386-linux-gnu/security/pam_mail.so
./var/log/mail.err
./var/log/mail.log
./var/www/lib_php/email_form_with_spamcheck.php
./etc/mailcap.order
./etc/mailcap
./etc/bash_completion.d/mailman
./etc/w3m/mailcap
Not seeing anything that resembled a mailing app, I tried installing sendmail:
sudo apt-get install sendmail
Following that, I looked for a path to an executable that I could point 'sendmail_path' to, but not sure of what I found.
Here are seemingly suspect highlights from the sendmail install "log" [from the commandline]:
> The following extra packages will be installed:
libdb4.8 m4 make procmail sendmail-base sendmail-bin sendmail-cf sensible-mda
> Suggested packages:
make-doc sendmail-doc rmail logcheck sasl2-bin
> Recommended packages:
default-mta mail-transport-agent fetchmail
> The following NEW packages will be installed:
libdb4.8 m4 make procmail sendmail sendmail-base sendmail-bin sendmail-cf sensible-mda
> 0 upgraded, 9 newly installed, 0 to remove and 1 not upgraded.
[Do the suggested/reccmmended packages need to be installed before/after installing sendmail, for sendmail to work?]
> update-rc.d: warning: sendmail stop runlevel arguments (0 1 6) do not match LSB Default-Stop values (1)
> update-alternatives: using /usr/lib/sm.bin/sendmail to provide /usr/sbin/sendmail-mta (sendmail-mta) in auto mode.
> update-alternatives: using /usr/lib/sm.bin/sendmail to provide /usr/sbin/sendmail-msp (sendmail-msp) in auto mode.
> update-alternatives: warning: not replacing /usr/share/man/man8/sendmail.8.gz with a link.
> You are doing a new install, or have erased /etc/mail/sendmail.mc.
> If you've accidentaly erased /etc/mail/sendmail.mc, check /var/backups.
> I am creating a safe, default sendmail.mc for you and you can
> run sendmailconfig later if you need to change the defaults.
* Stopping Mail Transport Agent (MTA) sendmail [ OK ]
> Updating sendmail environment ...
> Validating configuration.
> Writing configuration to /etc/mail/sendmail.conf.
> Writing /etc/cron.d/sendmail.
> Could not open /etc/mail/databases(No such file or directory), creating it.
> Could not open /etc/mail/sendmail.mc(No such file or directory)
...
> Could not open /etc/mail/databases(No such file or directory), creating it.
...
> Informational: confCR_FILE file empty: /etc/mail/relay-domains
> Warning: confCT_FILE source file not found: /etc/mail/trusted-users
it was created
> Informational: confCT_FILE file empty: /etc/mail/trusted-users
> Warning: confCW_FILE source file not found: /etc/mail/local-host-names
it was created
> Warning: access_db source file not found: /etc/mail/access
it was created
...
> WARNING: local host name (localhost) is not qualified; see cf/README: WHO AM I?
> /etc/mail/aliases: 4 aliases, longest 10 bytes, 66 bytes total
> Warning: 3 database(s) sources
were not found, (but were created)
please investigate.
> * Starting Mail Transport Agent (MTA) sendmail [ OK ]
/etc/hosts:
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
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