Do mail servers such as Yahoo, Windows Live Mail, Gmail block or trigger spam filters based on my IP address?

Question

Does my IP address have any effect on mail getting marked as spam, or would it usually be triggered by the recipients server triggering spam based on the senders' server's IP address?

I've had a look at a blacklist check and can see the IP's provided to me by my ISP are blacklisted on SEM BLACK, SORBS DUHL, Spamhaus ZEN, would this have any effect on email deliver-ability?

Answer 1

This absolutely has an effect on email deliverability. I previously worked on a bulk mailing system (newsletters), and we had to be extremely careful about what our clients sent out to prevent our system ips from being compromised.

You should indicate to your ISP that you are not happy with blacklisted IPs

Answer 2

Most domains will block by IP address when filtering spammers. This means that whatever IP address is the one that touches the domain is the one that gets blacklisted if spam is suspected.

As deadlyDev said, definitely talk to your ISP - presuming that your actions aren't the ones that caused the blacklisting. If these are dedicated IP addresses, and if it's likely that your actions caused the problem, then maybe you should reconsider your practices.