kumarpk
By:
kumarpk

Digital Ocean Firewall blocking sending Email

December 28, 2017 166 views
Firewall Ubuntu 16.04

Hi all,
I'm running a WordPress site on Ubuntu 16.04 Server. Before using Digital Ocean Firewall feature. My WordPress site was sending outgoing emails without any problem but after enabling I'm getting following error in my mail server log:

server postfix/smtp[10014]: connect to gmail-smtp-in.l.google.com[2607:f8b0:400d:c03::1b]:25: Network is unreachable

Currently I'm using following rules in the firewall:

Inbound Rules:
SSH TCP 22
DNS TCP TCP 53
HTTP TCP 80
HTTPS TCP 443
DNS UDP UDP 53

Outbound Rules:
DNS TCP TCP 53
HTTP TCP 80
HTTPS TCP 443
DNS UDP UDP 53

Please help me which port rule I'll need to add in the firewall to fix the issue,
Thanks!

2 comments
  • Hi there,

    It depends on what kind of SMTP port you are using. But from what I read, you need to open TCP/UDP port 587. Hope this helps you out

  • Thank you for reply,
    Will you please tell me where I need to add 587 port tcp/udp rule: in Inbound or Outbound?

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