Able to receive BUT Unable to send mails outside Zimbra!

Discuss your pilot or production implementation with other Zimbra admins or our engineers.
Post Reply
AnthrH3x
Posts: 1
Joined: Wed Jan 18, 2023 5:49 am

Able to receive BUT Unable to send mails outside Zimbra!

Post by AnthrH3x »

Hi,

I'm new to zimbra.
so, I deployed zimbra server on AWS and binded a static ip to it, I have purchased domain from godaddy, and added dns record accordingly.(which will be shared below)
I'm able to send mails to local users but cannot if I mail to google proton yahoo or any other, I have configured ssl, the logs are just fine there is no error, firewall rules are allowed to send all type of traffic,
even I'm able to receive mails from google (any other as well) but unable to send mail to gmail or anything else...
can anybody help me why it is happening ? or I'm missing something?
if there is anything I need to share further for solution, I can...
scrolled the internet but couldn't get anything.

Image
Image
Image
Image
Image
andreag
Posts: 3
Joined: Thu Jan 16, 2020 9:49 pm

Re: Able to receive BUT Unable to send mails outside Zimbra!

Post by andreag »

Maybe the problem is just related to the AWS port 25 throttle:
AWS blocks outbound traffic on port 25 (SMTP) of all EC2 instances and Lambda functions by default. If you want to send outbound traffic on port 25, you can request for this restriction to be removed.
https://repost.aws/knowledge-center/ec2 ... 5-throttle

Andrea
Post Reply