On October 19, 2021, we have enabled single-sign-on for our Plesk Support Center to provide a seamless login/account experience. This implies that you’ll be able to use a single account across any of our web-facing properties.
If you had already registered your account at Plesk 360 (formerly known as My Plesk) please use one for login. Otherwise please re-register it using the same email address as your existing Zendesk login (support account). It’s essential that you use the same email address on our support center to ensure that your tickets stay attached to the same account.

Unable to receive or send e-mails in Plesk hosted on AWS/LightSail or Microsoft Azure: port 25 is blocked

Follow

Comments

5 comments

  • Avatar
    Mickey (Edited )

    I have already opened port 25 in lightsail firewall still the issue persists

    1
    Comment actions Permalink
  • Avatar
    Yaroslav Tarasov

    Hello @Bogdan Damian,

    Try to send an email from non-Gmail account and check the logs at /var/log/maillog. If the email is rejected by your server there will be a corresponding message there.

    0
    Comment actions Permalink
  • Avatar
    Mihai Isari

    it`s a nightmare to use plesk on lighsail, I`m using SES for both ways, and I noticed that one email is coming other one bounce back "cannot find address", huge dns issues,

    0
    Comment actions Permalink
  • Avatar
    Bogdan Damian

    Hi,

    Thank you for this! Did all that, now I can send emails, works just fine. 

    My only problem remains that I can receive emails only from GMail accounts.

    Can you provide a solution for that? 

    [AWS Lightsail Plesk Hosting Stack]

    Thank you!

    0
    Comment actions Permalink
  • Avatar
    Yaroslav Tarasov

    Hello @Mickey,

    Opening port 25 in the Lightsail firewall is always a good approach. By doing it, you can be sure that port 25 is opened on your side.

    However, AWS blocks port 25 on their side directly, so it can be opened only by submitting a request to them using this link: https://aws-portal.amazon.com/gp/aws/html-forms-controller/contactus/ec2-email-limit-rdns-request

    Here is also AWS article regarding it: https://aws.amazon.com/ru/premiumsupport/knowledge-center/ec2-port-25-throttle/

    Please explicitly mention in the request that you need to remove the port block for LightSail, otherwise the AWS team will remove it for EC2 only.

    0
    Comment actions Permalink

Please sign in to leave a comment.

Have more questions? Submit a request