问题:

I'm posting because I've already gone through the solutions posted in other questions on here but they haven't helped.

What I am trying to do is send email using Swiftmailer through Google Apps for Business Gmail but I keep getting this error:

Connection could not be established with host smtp.gmail.com [Connection timed out #110]

I know the code is fine because it works on my local machine but not on the production server.

What I have tried so far:

Enabled OpenSSL.
Unblocked account from Google captcha.
Used an Application Specific Password.
Whitelisted Gmail SMTP IP addresses

Configuration:

# Swiftmailer Configuration swiftmailer:     transport:  smtp     encryption: ssl     auth_mode:  login     host:       smtp.gmail.com     username:   contact@mydomain.com     password:   applicationspecificpassword     port:       465

What else can I try? Could this be a DNS issue since I am using Gmails SMTP MX records instead of the servers.

回答1:

Replacing: smtp.gmail.com with 173.194.65.108 actually worked for me!

回答2:

The following steps worked for me :

Check if httpd_can_sendmail is on , run this getsebool httpd_can_sendmail
- When you get: httpd_can_sendmail --> off , run setsebool -P httpd_can_sendmail 1
- When you get: httpd_can_sendmail --> on that's fine move on step 2.
Check also if httpd_can_network_connect is on, run getsebool httpd_can_network_connect
- When you get httpd_can_network_connect --> off run setsebool -P httpd_can_network_connect 1
- When you get: httpd_can_network_connect --> on that's fine move on step 3.
Use the following settings for smtp : 'host' => '64.233.166.108' 'port' => '465'

I'm using Centos

回答3:

If you ever want to return to using Gmail, I've just faced the same problem - the code worked on my local machine but not on a real server - and think I've figured out what is causing it (at least in my case).

It appears that if a server supports IPv6 and IPv4, the server's domain resolves as its IPv6 version so PHP tries to connect to that. But I was finding that smtp.gmail.com did not respond, so after 30 seconds the script just gave up and timed out. You would think that PHP would try IPv4 after IPv6 failed, but no.

So when I swapped in the IPv4 address of smtp.gmail.com (got by ping-ing it), everything worked fine and the email sent. It's not ideal using an IP in place of a domain since it could change, but at least it saves digging up the rest of the server's floorboards :)

回答4:

just add 74.125.130.108 smtp.gmail.com to server's hosts file

回答5:

I have posted a workaround solution in Swiftmailer Gmail Connection timed out #110 where you can either use IPv4 or IPv6.

回答6:

For me the issue was i that I used tls encryption,here are the ports for TLS and SSL. Don`t forget to reboot after changing the env file.

smtp.gmail.com    ---    SSL       ---      465 smtp.gmail.com    ---   StartTLS ---   587

Also,you need to change the security of your google account

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