Ignoring X-Transport header while signing email with DKIM #42659
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Earlier @fabpot wrote in symfony/symfony-docs#15603 (comment):
Original problem
If we have multiple transports and use one of them, signature will contain X-Transport header by default. But email will not:
symfony/src/Symfony/Component/Mailer/Transport/Transports.php
Line 56 in 810599d
And signature will be invalid.