I created a droplet recently (Ubuntu Docker 18.06.1~ce~3 on 18.04). And I realize emails couldn’t be sent by my application.
I’m using SendGrid’s API.
It works perfectly from my local machine.
I can’t even ping api.sendgrid.com from my droplet.
PING api.sendgrid.com (159.122.219.48) 56(84) bytes of data. — api.sendgrid.com ping statistics — 328 packets transmitted, 0 received, 100% packet loss, time 335312ms
It works well if I try locally:
$ ping api.sengrid.com PING api.sengrid.com (85.128.131.76): 56 data bytes 64 bytes from 85.128.131.76: icmp_seq=0 ttl=50 time=85.898 ms 64 bytes from 85.128.131.76: icmp_seq=1 ttl=50 time=79.936 ms 64 bytes from 85.128.131.76: icmp_seq=2 ttl=50 time=112.295 ms
Why is that endpoint not reachable ? I tried other endpoints without issues.
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Hey @aduermael, I had faced the same issue, Your IP has been blocked by Sendgrid. My Peer suggested me to switch the delivery service and I started using Pepipost, API Configuration is much easier now. :)
Thank you for your answer! 🙂 I couldn’t wait to deploy that application, so I simply used another droplet. But I’ll keep that in mind if it happens again.
Hey friend!
This is a good question. I feel like it may be possible that SendGrid has blocked that IP or range that your droplet is on. You might reach out to their support and ask. I could be wrong, it could be what @JosephPersie mentioned because the IP you’re pinging from the droplet doesn’t look to be one on the api.sendgrid.com A record, yet I can still ping that IP locally anyway.
Jarland
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I’d check that they are using the same nameservers specified in /etc/resolv.conf on linux as well as using dig or mtr to find where exactly the DNS resolution is obstructed.
I tried from to other droplets (NYC2 & NYC3), it works! But it doesn’t from my AMS3 droplet… 😕