By eleetgeeks
[root@ns1 ~]# telnet gmail-smtp-in.l.google.com 25 Trying 172.217.197.27… telnet: connect to address 172.217.197.27: Connection timed out Trying 2607:f8b0:400d:c0f::1b… telnet: connect to address 2607:f8b0:400d:c0f::1b: Network is unreachable
please help
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
Hi @eleetgeeks,
It’s possible you you need to allow outgoing TCP traffic on port 25
iptables -I INPUT -p tcp -m tcp --dport 25 -j ACCEPT
Additionally, you can further read this DigitalOcean article explaining more about Iptables and what they are - https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands
Regards, KDSys
Become a contributor for community
Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.
DigitalOcean Documentation
Full documentation for every DigitalOcean product.
Resources for startups and SMBs
The Wave has everything you need to know about building a business, from raising funding to marketing your product.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
Get started for free
Sign up and get $200 in credit for your first 60 days with DigitalOcean.*
*This promotional offer applies to new accounts only.