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External SMTP not working

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Dovecot, Exim, RoundCube
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Posts: 3
Joined: Tue May 16, 2017 6:43 pm

External SMTP not working

Postby ThisWebDesignUK » Tue May 16, 2017 7:13 pm


I'm just trying to setup VESTACP as a little control panel for a small VPS that I am running on the side. Currently, everything is working perfectly, the only issue I'm having is that when I go to add my email accounts to places such as Outlook 2010, or Apple Mail on iPhone the SMTP does not work.

A few things to note:

Vultr Hosting VPS running Ubuntu 16.04 x64
Exim showing as Exim4
Running mutliple domains
SMTP working when sending from the domain.tld/webmail (roundcube)

I hope this is a small problem that can be fixed easily.

Things I have looked into:
Reverse DNS - Not sure whether this is set correctly
In exim4.conf.template - # infront of hostlist (whitelist / spammers)

Hopefully someone can help me?

EDIT - I have not got any form of SSL certificate, only that with the default VestaCP installation

Posts: 1
Joined: Wed May 17, 2017 2:58 am

Re: External SMTP not working

Postby tuancele » Wed May 17, 2017 3:01 am

I also have this problem. Please help

Posts: 305
Joined: Mon Feb 23, 2015 4:13 pm

Os: Ubuntu 16x
Web: apache + nginx

Re: External SMTP not working

Postby ScIT » Thu May 18, 2017 8:25 am

You can try to check the connection to your smtp server manualy. Run the following command from your client:

Code: Select all

telnet yourserver 25

https://www.port25.com/how-to-check-an- ... session-2/

Posts: 3
Joined: Tue May 16, 2017 6:43 pm

Re: External SMTP not working

Postby ThisWebDesignUK » Thu May 18, 2017 5:19 pm

I believe the problem is also that I'm sending all the DNS traffic to two different servers. This means that I believe It's not setting it correctly. Will be running on a different domain from now but would still greatly appreciate any suggestions.. Does this happen to anyone else running Vesta with Vultr Hosting?

Posts: 4
Joined: Mon Sep 28, 2015 9:19 pm

Re: External SMTP not working

Postby dynamiclink » Fri Jan 05, 2018 10:16 am

Vultr block port 25 for outgoing traffic by default.
Using other ports

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