Contact form 7 with wp mail smtp
Contact Form 7 does use the Wordpress settings. If you configure WP-Mail-SMTP and check the radiobutton for "Send all WordPress emails via SMTP.", it will automatically use this settings.
For people who are still facing this issue.
Edit your Contact Form
and check From
field under Mail
tab, and make sure it is same as defined in WP Mail SMTP > General > From Email
.