[docs] problem after mail spooling is disabled

[vitek-rostislav]

What is happening

http://docs.shopsys.com/en/8.0/introduction/faq-and-common-issues/#why-are-e-mails-sent-before-end-of-the-script-and-not-immediately mentions that it is possible to disable mail spooling by removing the option from swiftmailer.yml config. However, this causes the application to fail as https://github.com/shopsys/shopsys/blob/master/packages/framework/src/Model/Mail/Mailer.php is dependent on @swiftmailer.transport.real service that is not defined when the spooling is off (see https://stackoverflow.com/questions/21074756/symfony2-monolog-to-email-errors-why-swiftmailer-transport-real-is-non-existent)

On my project, defining the service this way helped:

swiftmailer.transport.real:
        class: Swift_SmtpTransport
        arguments: ['%mailer_host%']

Expected result

The FAQ article mentions that you need to define swiftmailer.transport.real yourself when you disable spooling

[stale]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[pk16011990]

remove stale label

[stale]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[grossmannmartin]

Spooling is no longer supported after #2470. closing