Quote:
Originally Posted by hadrick
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Yep - if you're listed there then you're on spamcop's blacklist - but there are many more too... if you're
not blacklisted there then it doesn't mean that you're fine. You should check as many "popular" blacklists as possible, because if you're on any then it's a potential sign of a problem, which is why the link given above (by Richie_Ni) is so useful.
Quote:
Originally Posted by hadrick
It is really better to change the IP if it gets blacklisted. Cause it will give more pain if you fail to resolve it and your service is interelated with it like hosting or email service.
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Pretty much the only thing affected by blacklisted IPs is "email service" - what else are you thinking of which is "interelated" with it?
As I said above - if you change IP without sorting the problem out then you will find that the problem follows you anyway, so absolutely nothing gained (also worth mentioning that other things such as hostname, domain name etc. may become blacklisted instead/as well, so changing IP may not achieve anything at all).
If you solve the problem, and don't change IP, most blacklists will remove you after a period of inactivity (i.e. after spam reports stop) and/or upon request. Therefore you can be de-blacklisted quite quickly, and changing IP shouldn't be necessary.
In this case, because the IP you're using could only have become blacklisted through your own activities (e.g. an insecure script or mail relay on your VPS etc.) then it is most likely that all of the above applies.
If it were a shared hosting scenario, where the actions (or lack) of other users may have caused the IP that you use to become blacklisted then you may have more reason to move IP / host etc. However, even in this situation providing that the hosting provider deals with the issue promptly then the impact to your service should be minimal.