allows users to configure path to trusted CA certificate file(s). the
defaults are `nil` as there is no agreement on default path.
possible paths for `SMTP_CA_FILE` include:
* `/etc/pki/tls/certs/ca-bundle.crt` (RedHat)
* `/etc/ssl/certs/ca-certificates.crt` (Debian and its variants)
* `/usr/local/etc/ssl/cert.pem` (FreeBSD)
* `/etc/ssl/cert.pem` (OpenBSD)
Ruby on Rails Guides, nor `mail` gem, documents these options.
4f56234f04/lib/mail/network/delivery_methods/smtp.rb (L144-L145)fixes#354
* New translations app.public.en.yml (French)
* New translations app.admin.en.yml (Portuguese)
* New translations app.shared.en.yml (French)
* New translations app.shared.en.yml (Spanish)
* New translations app.shared.en.yml (German)
* New translations app.shared.en.yml (Norwegian)
* New translations app.shared.en.yml (Portuguese)
* New translations app.admin.en.yml (Zulu)
* New translations app.admin.en.yml (Norwegian)
* New translations app.admin.en.yml (German)
* New translations mails.en.yml (French)
* New translations app.admin.en.yml (French)
* New translations app.admin.en.yml (Spanish)
* New translations app.shared.en.yml (Zulu)
* New translations mails.en.yml (French)
* New translations app.admin.en.yml (French)
* New translations app.public.en.yml (French)
* New translations app.admin.en.yml (French)
* New translations app.admin.en.yml (French)
* New translations app.public.en.yml (French)
* New translations app.admin.en.yml (Portuguese)
* New translations app.public.en.yml (Zulu)
* New translations app.shared.en.yml (French)
* New translations app.admin.en.yml (Zulu)
* New translations app.admin.en.yml (Norwegian)
* New translations app.admin.en.yml (German)
* New translations mails.en.yml (French)
* New translations app.admin.en.yml (Spanish)
* New translations app.public.en.yml (Spanish)
* New translations app.public.en.yml (French)
* New translations app.public.en.yml (German)
* New translations app.admin.en.yml (Portuguese)
* New translations app.public.en.yml (Norwegian)
* New translations app.public.en.yml (Portuguese)
* New translations app.public.en.yml (Zulu)
* New translations app.shared.en.yml (French)
* New translations app.shared.en.yml (Spanish)
* New translations app.shared.en.yml (German)
* New translations app.shared.en.yml (Norwegian)
* New translations app.shared.en.yml (Portuguese)
* New translations app.admin.en.yml (Zulu)
* New translations app.admin.en.yml (Norwegian)
* New translations app.admin.en.yml (German)
* New translations app.admin.en.yml (French)
* New translations app.admin.en.yml (Spanish)
* New translations app.shared.en.yml (Zulu)
* New translations app.admin.en.yml (French)
* New translations app.public.en.yml (French)
* New translations en.yml (French)
* New translations app.shared.en.yml (French)
* New translations mails.en.yml (French)