IP address 198.2.128.18 is whitelisted at dnswl.org with the following details:

DNSWL Id: 21985; Domain: mailchimp.com; Sec. Domains: mcsv.co.uk, rsgsv.net, mcdlv.net, mcsv.net, mandrillapp.com; Category: Email Marketing Provider (127.0.0.x); Country: US

Please use the dnswl.org Self Service portal for any change requests.

Please remember: dnswl.org is a whitelist, not a blacklist. Please do not contact us requesting "removal from blacklist".