SMTP-friendly VPS provider where I can also get a BGP feed

Hey all, I apologize if this isn't the right place to post this; however, I thought maybe the NANOG community would be able to point me in the right direction. I'm looking for a place that I can host a mailer. My primary use case is a Mailman-style technical discussion list; much like NANOG but software related instead of network related: READ: non-commercial in nature. I'm currently a vultr customer, but they're refusing to unblock port 25 on my account. I've tried explaining my use case but no matter who I talk to over there they just keep pointing me to their spam policy. Thanks! -Daniel