Question
IMAP port 1143 and SMTP port 1025
- Posted on March 25, 2025
- Product Management
Asked by Patrick Billings
Debain 12, Cloud Server; On my Droplet is port 1143 and port 1025 blocked? After installing the Proton Mail Bridge I like to send and recieve mail from Cloud Droplet. http://plbillings.com Such as plb@plbillings
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!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
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.
Get our newsletter
Stay up to date by signing up for DigitalOcean’s Infrastructure as a Newsletter.
New accounts only. By submitting your email you agree to our Privacy Policy
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.
Hello, @patrickbillings
One thing to note is that the SMTP ports (25, 465, 587) are blocked by default on DigitalOcean Droplets, which can cause issues with apps like Rocket.Chat if they’re trying to send email via SMTP:
Since you’re using SendGrid, the best option is to use SendGrid’s API instead of SMTP, that avoids port issues entirely. Make sure Rocket.Chat is configured to use SendGrid’s API key and endpoint, not SMTP.
You can also deploy SendGrid easily via the 1-Click App here:
Regards