diff --git a/.fabmanager-version b/.fabmanager-version
index 338a5b5d8..e261122d5 100644
--- a/.fabmanager-version
+++ b/.fabmanager-version
@@ -1 +1 @@
-2.6.6
+2.6.7
diff --git a/CHANGELOG.md b/CHANGELOG.md
index eebdf9e82..3b35c0403 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog Fab Manager
 
+## v2.6.7 2018 October 4
+
+- Ability to configure SMTP more precisely
+- Typo correction in README (#121)
+- [TODO DEPLOY] add the following environment variables: `SMTP_AUTHENTICATION, SMTP_ENABLE_STARTTLS_AUTO, SMTP_OPENSSL_VERIFY_MODE`
+
 ## v2.6.6 2018 September 18
 
 - Ability to parametrize machines order on the booking page
diff --git a/README.md b/README.md
index d6529a2eb..06115a3cc 100644
--- a/README.md
+++ b/README.md
@@ -123,7 +123,7 @@ This procedure is not easy to follow so if you don't need to write some code for
    ```
 
 8. Build the database. You may have to follow the steps described in [the PostgreSQL configuration chapter](#setup-fabmanager-in-postgresql) before, if you don't already had done it.
-   - **Warning**: **NO NOT** run `rake db:setup` instead of these commands, as this will not run some required raw SQL instructions.
+   - **Warning**: **DO NOT** run `rake db:setup` instead of these commands, as this will not run some required raw SQL instructions.
    - **Please note**: Your password length must be between 8 and 128 characters, otherwise db:seed will be rejected. This is configured in [config/initializers/devise.rb](config/initializers/devise.rb) 
 
    ```bash
@@ -220,10 +220,10 @@ When sending notification mails, the platform will use this address to identify
 Configure the Rails' Action Mailer delivery method.
 See http://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration for more details.
 
-    DEFAULT_HOST, DEFAULT_PROTOCOL, SMTP_ADDRESS, SMTP_PORT, SMTP_USER_NAME & SMTP_PASSWORD
+    DEFAULT_HOST, DEFAULT_PROTOCOL, SMTP_ADDRESS, SMTP_PORT, SMTP_USER_NAME, SMTP_PASSWORD, SMTP_AUTHENTICATION, SMTP_ENABLE_STARTTLS_AUTO & SMTP_OPENSSL_VERIFY_MODE
 
 When DELIVERY_METHOD is set to **smtp**, configure the SMTP server parameters.
-See http://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration for more details.
+See https://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration for more details.
 DEFAULT_HOST is also used to configure Google Analytics.
 
     GA_ID
diff --git a/config/application.yml.default b/config/application.yml.default
index fd3b8e8f4..de0783247 100644
--- a/config/application.yml.default
+++ b/config/application.yml.default
@@ -24,6 +24,9 @@ SMTP_ADDRESS:
 SMTP_PORT: '587'
 SMTP_USER_NAME:
 SMTP_PASSWORD:
+SMTP_AUTHENTICATION: 'plain'
+SMTP_ENABLE_STARTTLS_AUTO: 'true'
+SMTP_OPENSSL_VERIFY_MODE: ''
 GA_ID: ''
 ##
 
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 5175c8719..238ebcfd1 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -93,8 +93,9 @@ Rails.application.configure do
     :port      => Rails.application.secrets.smtp_port,
     :user_name => Rails.application.secrets.smtp_user_name,
     :password  => Rails.application.secrets.smtp_password,
-    :authentication       => 'plain',
-    :enable_starttls_auto => true
+    :authentication       => Rails.application.secrets.smtp_authentication,
+    :enable_starttls_auto => Rails.application.secrets.smtp_enable_starttls_auto,
+    :openssl_verify_mode  => Rails.application.secrets.smtp_openssl_verify_mode,
   }
 
   # use :smtp for switch prod
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index 067ea2d1d..43961df1a 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -92,8 +92,11 @@ Rails.application.configure do
     :address   => Rails.application.secrets.smtp_address,
     :port      => Rails.application.secrets.smtp_port,
     :user_name => Rails.application.secrets.smtp_user_name,
-    :password  => Rails.application.secrets.smtp_password
-  }
+    :password  => Rails.application.secrets.smtp_password,
+    :authentication       => Rails.application.secrets.smtp_authentication,
+    :enable_starttls_auto => Rails.application.secrets.smtp_enable_starttls_auto,
+    :openssl_verify_mode  => Rails.application.secrets.smtp_openssl_verify_mode,
+    }
 
   # use :smtp for switch prod
   config.action_mailer.delivery_method = Rails.application.secrets.delivery_method.to_sym
diff --git a/config/secrets.yml b/config/secrets.yml
index 74a192594..d4f4efb3a 100644
--- a/config/secrets.yml
+++ b/config/secrets.yml
@@ -91,6 +91,9 @@ staging:
   smtp_port: <%= ENV["SMTP_PORT"] %>
   smtp_user_name: <%= ENV["SMTP_USER_NAME"] %>
   smtp_password: <%= ENV["SMTP_PASSWORD"] %>
+  smtp_authentication: <%= ENV["SMTP_AUTHENTICATION"] %>
+  smtp_enable_starttls_auto: <%= ENV["SMTP_ENABLE_STARTTLS_AUTO"] %>
+  smtp_openssl_verify_mode: <%= ENV["SMTP_OPENSSL_VERIFY_MODE"] %>
   time_zone: <%= ENV["TIME_ZONE"] %>
   week_starting_day: <%= ENV["WEEK_STARTING_DAY"] %>
   d3_date_format: <%= ENV["D3_DATE_FORMAT"].dump %>
@@ -132,6 +135,9 @@ production:
   smtp_user_name: <%= ENV["SMTP_USER_NAME"] %>
   smtp_password: <%= ENV["SMTP_PASSWORD"] %>
   time_zone: <%= ENV["TIME_ZONE"] %>
+  smtp_authentication: <%= ENV["SMTP_AUTHENTICATION"] %>
+  smtp_enable_starttls_auto: <%= ENV["SMTP_ENABLE_STARTTLS_AUTO"] %>
+  smtp_openssl_verify_mode: <%= ENV["SMTP_OPENSSL_VERIFY_MODE"] %>
   week_starting_day: <%= ENV["WEEK_STARTING_DAY"] %>
   d3_date_format: <%= ENV["D3_DATE_FORMAT"].dump %>
   uib_date_format: <%= ENV["UIB_DATE_FORMAT"] %>
diff --git a/docker/env.example b/docker/env.example
index 778f70c11..51ed48325 100644
--- a/docker/env.example
+++ b/docker/env.example
@@ -21,6 +21,9 @@ SMTP_ADDRESS=smtp.sendgrid.net
 SMTP_PORT=587
 SMTP_USER_NAME=
 SMTP_PASSWORD=
+SMTP_AUTHENTICATION=plain
+SMTP_ENABLE_STARTTLS_AUTO=true
+SMTP_OPENSSL_VERIFY_MODE=
 
 GA_ID=