Cablevision email problem when sending from inside Cablevision Optonline
Posted on 2016-11-01
a friend has cablevision optonline home internet service with dynamic DHCP.
She's been using Windows Live Mail on her windows 7 machine to access her optonline (OOL) and gmail email accounts.
About a month ago, she wasn't able to send mail with Windows Live app using the optonline account: the OOL server wouldn't accept the mail. And when she sent from gmail to OOL users via live mail app, it was blocked by Cablevision.
When using the gmail and OOL webmail, everything worked perfect. Calling OOL tech support they said one of her machines was infected with malware and they blocked her outbound sending ability.
we had checked her machine and told them it was clean. OOL then removed the block they said.
The problem came back recently. She had a number for OOL shared services which is a 2nd tier part of support it seems. But they were no help, blaming winfdows live app for the problem. We installed thunderbird with the same results. It would appear that her IP address was on RBLs which is what we saw. But OOL said they don't use the RBLs that we saw she was on.
I had her turn off her cable modem last night and this morning when powering it on, she got a different IP address. But that one is on several RBLs also.
Then I started checking other IPs in those ranges and those are also on RBLs
would anyone have any advice? Are OOL IP address ranges automatically on some RBLs? I can't see why or when these IP addresses were put on the RBLs.
or someone in the area gets the IP address, spams people till they get on RBLs, then gets another IP and repeat process?
She's considering moving to Fios to get a clean IP address? But we have FIOS and just checked our IP address - we are on dnsbl and dun.dnsbl SORBS and zen, PBL SPAMHAUS RBLs - the same ones that she's on. Are those just lists of DDHCP pools?
Should she get a static IP? She's just a home user.