Charter and Cox contacts

Mon May 13 22:29:43 UTC 2019

On 5/13/19 12:11 PM, daniel at pyranah.com wrote:
> Does anyone have contacts at Charter (Spectrum) and Cox? For some reason,
> our IP has been blocked by them and our customers are unable to send email
> via their charter/cox accounts. Thanks

Would you be talking about port 25/tcp outbound?  Lots of ISPs will
block port 25 as a rule; you have to call to have it opened.  At the
same time, you can request the PTR record you need to keep big mail
receivers happy.