Swiftmailer times out when trying to send an email from my Symfony App (Flex)

March 18, 2018 1.1k views
PHP Apache Email MySQL Ubuntu 16.04
Guillecro
By:
Guillecro

Hello peeps!

I have a Symfony Flex (v4) app on one of my droplets.
I am using SwiftMailer in my app so i can send emails.
It sends to another host (a mail server) the email so it can handles it.

The MAILER_URL is in an Apache2 SetEnv variable and it something like this:

SetEnv MAILER_URL "smtp://amazing.domain.org:25?etcetcetc"

The log of my applications says that it timed out

[2018-03-17 21:24:36] app.ERROR: Exception occurred while flushing email queue: Connection could not be established with host amazing.domain.org [Connection timed out #110] [] []
  • In my dev environment it sends the email correctly.
  • Its not a problem of the email service provider.. I've checked it and its working great
  • The settings of the connection are correct.. so its not a wrong password nor username nor type of connection nor port of the host...

I am starting to believe that something is blocking it.. maybe i need to add some outbound rule.. any ideas?
Any rule i have to add to my firewall? to my ufw Ubuntu droplet?

Thanks for the help in advance.
I love this community. Much love.

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1 Answer
kamaln7 MOD March 18, 2018

Hi, can you please post the output of this command? It will check if your Droplet is able to communicate over the ports required to send emails externally:

nc -vz smtp.gmail.com 25
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  • Guillecro April 8, 2018

    Kamai, thanks for your answer!
    Basically I contacted DO for support by opening a ticket and they told me that it got blocked when i updated my billing info, probably because i bought a new droplet.
    They removed it and i was able to send emails.

    But thanks for your answer, that command will be helpful to future users!

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