[Solved] No bcc mails after upgrade

[denzen]

After a TYPO3 upgrade to 10 and an Aimeos upgrade to 21.10, no more bcc mails go out as a copy.
The emails to the customer work and now even have the invoice attached immediately, also with prepayment.
This is the TYPOscript in the scheduler, which worked before the upgrade:
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plugin.tx_aimeos.settings.client.html.email.from-name = My Store
plugin.tx_aimeos.settings.client.html.email.from-email = info@mystore.de
plugin.tx_aimeos.settings.client.html.email.reply-name = Bestellung bei Mystore
plugin.tx_aimeos.settings.client.html.email.reply-email = service@mystore.de
plugin.tx_aimeos.settings.client.html.email.bcc-email = support@mystore.de

Does anyone have an idea?

Thank you & Best Regards
Denis
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AIMEOS 21.4.2
FreeBSD
PHP 7.4.3
MySQL 5.7.27
TYPO3 10.4.4

[denzen]

Another sendmail parameter brought the solution.
This works for me:
/ usr / sbin / sendmail -bs -i -f info@mystore.de
Information is available here:
https://github.com/symfony/symfony/pull/39744