Connection could not be established with host smtp.gmail.com

Question

Trying to send email with Swiftmailer, I got this error. I've configured swiftmailer with:

transport: smtp
host: smtp.gmail.com
username: example@example.com
password: password
port: 587
encryption: ssl

I always get this error message:

Connection could not be established with host smtp.gmail.com

I've also tried with:

transport: gmail
host: smtp.gmail.com
username: example@example.com
password: password
port: 587
encryption: ssl

The complete error message is

[YYYY-mm-dd hh:ii:ss] app.ERROR: Exception occurred while flushing email queue: Connection could not be established with host smtp.gmail.com [ #0]

Other questions:

My case is different from this. In my case I've not Avast antivirus.

EDIT: changing port to 465, as Alex Howansky suggested, erro changes in

Exception occurred while flushing email queue: Failed to authenticate on SMTP server with username "my email address" using 1 possible authenticators

Port 587 is not SSL. You probably want port 465. See [here](https://www.lifewire.com/what-are-the-gmail-smtp-settings-1170854). — Alex Howansky, Jun 14 '17 at 15:47
You might need to toggle the _"Use Less Secure Apps"_ setting as described [here](https://stackoverflow.com/questions/29098781/script-sending-mails-with-gmail-failed-to-authenticate-on-smtp-server). — Alex Howansky, Jun 14 '17 at 15:54

score 0 · Answer 1 · answered Aug 29 '17 at 05:59

1: Either you must allow less secure apps or use app password by enabling 2 step verification on your gmail acc. 2: Disable any antivirus on your machine(this is something no one will tell u but is necessary in many cases). 3: Don't forget to clear your cache (sometimes it don't take updated content from .env file) 4: You don't need to change anything in Mailer inside config directory(not recommended), you should use env variables

Malik Kamran Abid · Answer 2 · 2017-06-14T15:56:46.593

-1

it's looking for the server smtp.gmail.com but isn't able to resolve it. use this domain smtp.gmail.com and port 25 or 465.

edited Jun 14 '17 at 15:56

answered Jun 14 '17 at 15:55

Malik Kamran Abid

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who is looking for "mail.website.com"? – sensorario Jun 14 '17 at 15:55
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so, ... you are suggesting to change smtp.gmail.com:465 to smtp.gmail.com:465. Interesting. – sensorario Jun 14 '17 at 15:58
i guess u are using port 587 which u have shown on your question – Malik Kamran Abid Jun 14 '17 at 15:59
Yes, but I've update the question as Alex suggested. Error is changed. – sensorario Jun 14 '17 at 16:00
Yes, again, as Alex suggested. – sensorario Jun 14 '17 at 16:01

Connection could not be established with host smtp.gmail.com

2 Answers2