I think OVH is blocking all of Digital Ocean's IP addresses

I’ve tried with 3 different droplets, each in a different location, to reach OVH’s servers (for sending mails, I use them as an SMTP provider) and every time, the connection just seems to be blocked.

I can’t even ping anything from OVH (not only their SMTP service).

I have been trying from :

• AMS2
• FRA1
• LON1

I can not find anything online documenting this issue. Does anyone know is there’s a way to around this issue ?

It has huge consequences because OVH is a pretty big hosting provider in EU and so is Digital Ocean. It means you can’t have any service at Digital Ocean communicating with any service at OVH. Both parties must be aware of that. Why isn’t it documented anywhere ?

Thanks