KnowDB

port

587 (submission)

See also: postfix (software)

Port 587 (submission): SMTP submission, email submission from clients.

Port 587 is open on 10 hosts in your infrastructure, across 6 operating systems.

The hosts listening to this port run on these cloud providers:

None: 6 hosts (60%)AWS: 3 hosts (30%)GCP: 1 host (10%)
  1. None6 hosts, 60%
  2. AWS3 hosts, 30%
  3. GCP1 host, 10%