Connection could not be established with host, but only with certain mails

[korsmakolnikov]

request.CRITICAL: Uncaught PHP Exception Swift_TransportException: "Connection could not be established with host host.com [ #0]" at vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php line 269 {"exception":"[object] (Swift_TransportException(code: 0): Connection could not be established with host host.com [ #0] at vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:269)"}

I found this error in production today and I've discovered it happens purely in random way. I have no other errors on logs, so it seems that nothing is break in my source code. Host.com is not actually the address (I simply hide it) of my smtp server but we ping it from local and from our web server machine, I could also log into mail service console normally.
Any Ideas?

[xdecock]

You're not catching an exception and your server cannot connect to the host. the reason might be timeout, dns problem, firewall, ...

…

On Tue, Jun 13, 2017 at 4:43 PM, Federico Caprari ***@***.***> wrote: request.CRITICAL: Uncaught PHP Exception Swift_TransportException: "Connection could not be established with host host.com [ #0]" at vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php line 269 {"exception":"[object] (Swift_TransportException(code: 0): Connection could not be established with host host.com [ #0] at vendor/swiftmailer/swiftmailer/lib/classes/Swift/ Transport/StreamBuffer.php:269)"} I found this error in production today and I've discovered it happens purely in random way. I have no other errors on logs, so it seems that nothing is break in my source code. Host.com is not actually the address (I simply hide it) of my smtp server but we ping it from local and from our web server machine, I could also log into mail service console normally. Any Ideas? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#953>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADCfdeIchhnmWWlPfnNBhIX40dp3nBsks5sDqAFgaJpZM4N4mPX> .

-- Xavier De Cock GPG Fingerprint: 93CA EE3F 9F57 5BE1 AE4A 794D 3C74 CA9E E7A5 0C1B GPG Id: 0xE7A50C1B

[fredec]

It's probably a problem with the SSL certificate. Take a look at here: https://laravel.io/forum/04-03-2014-problem-with-sending-emails

[NewtonCazzaro]

I know how to solve your problem.. Simply rekey your SSL cert and wait 48h*. You must wait 48h as the domain might get certified ,but the SMTP servers takes longer to propagate.