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LPCaillouet's avatar
LPCaillouet
New Contributor
2 years ago

Cox SMTP Access Blocked for Vacation Home IP Address

Cox is the ISP at home in Louisiana.  On Cox WiFi there, I am successful in using either Microsoft Outlook on my Windows 10 laptop or Mail on my iOS 15.7 iPhone (with cellular data either on or off) ...
blacklist
IP blocked
SMTP access
WiderMouthOpen's avatar
WiderMouthOpen
Esteemed Contributor

Getting a new IP when swapping out a modem/router combo is pretty normal. Is has a different MAC address so DHCP has to give it a different IP. What isn't normal is must have pulled from a different IP block that doesn't have rDNS/PTR. That is up to Optimum. You might try posting on DSLReports to see if it is possible to fix so your not asking the impossible of their tier 1. Maybe try their direct forum so you can post personal info.

LPCaillouet's avatar
LPCaillouet
New Contributor
2 years ago

Thanks for everything!  I have just completed a chat with Suddenlink/Optimum -- they promised a fix in 48-72 hours.  Of course, I've heard that music before...

  • WiderMouthOpen's avatar
    WiderMouthOpen
    Esteemed Contributor
    2 years ago

    Keep us updated. If they can help that would be good to know for other users going forward.