So we have quite a few .org, .@bobjonesattorney.com, @dowjones.com email addresses in our DB. Many of these corps do not like Marketo's send IPs. In fact ... our own internal spam setup was blocking Marketo-derived emails, which made testing a chore. Ha! Ha! We solved the issue internally by whitelisting Marketo's IP addresses.
Any advice for how to approach valued clients, sponsors, partners, etc. with business-oriented addresses? We're working on a call-based outreach campaign and would like to incentivize these undeliverables into taking action that'll get them back on the rolls.
Since asking them to whitelist Marketo's Send IPs is laughable, is there anything else our call folks can suggest?