Diana Kirk wrote:
>I want to thank everyone for their responses. They were all helpful for
>my understanding a little better not only what's happening in this
>case, but what to do in case my lists actually do get blacklisted.
>
>
>
If you really get blacklisted, there is probably a reason. The 2 most
common reason are:
1. you are an "Open Relay"
2. actual spam is being sent from your site.
For option 1, in your case, you would contact the supliers of the server
and complain to them. If it was your own server, you have to make sure
the rules of the system say something like "only allow mail from these
IP addresses or for this domain". In sendmail there is a section for
"relay-mail" or "access" which usually call external files which have
rules for what IP addresses are allowed. Make sure those files do not
have wildcards as the IPs. Make sure only the domains you want to
accept mail for are configured in the "sendmail.cw" file or any lines
in the sendmail.cf which start with "Fw" and "Cw".
For option 2, your server may be eithe a fully open relay or it is
relaying for someone who is a spammer, remove them or see option 1.
Otherwise a local user or some form of hacker has set up SPAM shop on
your system. remove them. Again, in your case this probably means
contact your system supplier and complain to them.
In either case, the site which blocks you usually sends at least a URL
which you can then check their site for rules. They usually have
information about how people get blacklisted and what they can do to get
un-blacklisted. For a sample, go to http://www.mail-abuse.org/ and see
what they say about how people get listed and what you can do to get off
the list.
Hope this helps
References:
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