Inclusion in the OSPAM Blacklist indicates that your computer/server or a previous user of this IP sent spam to a trap; Or computers and/or servers within your Class C IP network are sending large amounts of spam to the OSPAM Spamtraps.
Are you confident your email is getting through?
You rely on email for business critical communication, so you need to know your email has been delivered to your customers and you need to know who is sending email on your behalf.
MxToolbox is YOUR expert on email deliverability. Delivery Center analyzes your DMARC, DKIM and SPF to give you the insight you need to make email configuration changes and get your emails to your customer's inboxes.