Wordpress mails end up in mail queue

I'm stuck and don't exactly know where to ask for a solution. Since the members of this forum are probably the smartest, I just try here ;) I have a Woocommerce (wordpress) webshop on my WHM/Cpanel server. The problem is with the order confirmation e-mails that are send through the webshop. I've let Woocommerce know that it should e-mail from info@hondencamera.nl, but it isn't received by the buyer. The e-mails are queued up in Mail queue on WHM. When i try to deliver this is the log: LOG: MAIN cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1fMB4N-0005so-7E delivering 1fMB4N-0005so-7E Connecting to vps.transip.email [149.210.149.126]:587 ... connected SMTP<< 220 submission12.mail.transip.nl ESMTP SMTP>> EHLO webserver01.lemoremedia.com SMTP<< 250-submission12.mail.transip.nl 250-PIPELINING 250-SIZE 37033449 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN SMTP>> STARTTLS SMTP<< 220 2.0.0 Ready to start TLS SMTP>> EHLO webserver01.lemoremedia.com SMTP<< 250-submission12.mail.transip.nl 250-PIPELINING 250-SIZE 37033449 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN SMTP>> AUTH LOGIN SMTP<< 334 VXNlcm5hbWU6 SMTP>> **************************************** SMTP<< 334 UGFzc3dvcmQ6 SMTP>> ************************ SMTP<< 235 2.7.0 Authentication successful SMTP>> MAIL FROM: SIZE=9403 AUTH=hondencamera@webserver01.lemoremedia.com SMTP>> RCPT TO: SMTP>> DATA SMTP<< 250 2.1.0 Ok SMTP<< 250 2.1.5 Ok SMTP<< 354 End data with . SMTP>> writing message and terminating "." SMTP<< 421 4.7.0 An Internal Server Error has occurred. SPF records for webserver01.lemoremedia.com could not be verified. Please try again later. Please see https://www.transip.eu/question/110000767 for more information. (40sysW2SQFz1BFMw) LOG: MAIN H=vps.transip.email [149.210.149.126]: SMTP error from remote mail server after end of data: 421 4.7.0 An Internal Server Error has occurred. SPF records for webserver01.lemoremedia.com could not be verified. Please try again later. Please see https://www.transip.eu/question/110000767 for more information. (40sysW2SQFz1BFMw) SMTP>> QUIT SMTP(close)>> LOG: MAIN == mariblanken@gmail.com R=remoteserver_route T=remoteserver_relay defer (-46) H=vps.transip.email [149.210.149.126]: SMTP error from remote mail server after end of data: 421 4.7.0 An Internal Server Error has occurred. SPF records for webserver01.lemoremedia.com could not be verified. Please try again later. Please see https://www.transip.eu/question/110000767 for more information. (40sysW2SQFz1BFMw)
It looks like it wants to send through my hostname (webserver01.lemoremedia.com), but it should be info@hondencamera.nl Where do i need to check what now? Hope someone can help