Hi Brad,
I can empathize with the issues you're having as optonline.net addresses
are not accepting our mail as well.
We're seeing: 451 4.7.1 Resources restricted for host [IP] - try again
later - H5,5 - 13
Unfortunately, we've (an ESP) not had any success either in our attempts to
resolve the is
Is there anyone here from Altice/Optimum? We have some issues with
transactional mail being delayed for hours and haven't been able to reach
anyone via the usual channels, including the old CV abuse address.
Thanks,
Brad
Brad Gurley / Email Deliverability & Compliance Professional
b...@deliveryc
