Symfony Mailer configure sendmail parameters

we are using symfony/mailer in our project and i was wondering how i can configure the sendmail command with custom paramters. i found alot of content referencing to swiftmailer but we do not use that on this project.

we use:

symfony/mailer                           v4.4.7             Symfony Mailer Component

and i cannot find the configuration for the sendmail command or how that would be configured.we have to use a specific command for that:

/usr/sbin/sendmail -oi -t

how would the configuration of symfony/mailer look like to use that specific command?

we cannot use the default

/usr/sbin/sendmail -bs

because thats no option for our customer in this case...

help is much appreciated

EDIT:we just patched the core for our requirements on that specific project. i leave the question unresolved because their might be a better solution to that?