DMARC shouldn't be an issue for mailing lists, as long as one of DKIM/SPF passes. Are you seeing reports of both DKIM and SPF failing for mailing lists you use?

DMARC shouldn't be an issue for mailing lists, as long as one of DKIM/SPF passes. Are you seeing reports of both DKIM and SPF failing for mailing lists you use? Properly configured mailing lists shouldn't modify contents of emails causing DKIM to fail. I personally use Linode and would recommend them. But basically any tier 1/2 provider, i.e. too big/popular to block, will do. However, I would avoid DigitalOcean per my experience due to them completely blocking SMTP on IPv6 in addition to badly implemented IPv6 support and seemingly subpar support.