Can not send emails to domain other than store.

[Regorro]

Hi,

So in prestashop 1.7.4.2 under the SMTP configuration the store is unable to send test email to any address that is not from a domain of the store. If I try to send the 'test email' to an email addres with a domain that store is set up on (or the same that is in the SMTP configuration) then it goes - there is an success message and in my inbox there is a new e-mail.

But any other domain, like gmail, gmx etc. is not working. Prestashop claims "Check your configuration". I know some servers are configured to not send emails to other domains. But mine is not. I know this, as I have prestashop 1.7.3.2 installed on the same server, with the same settings (the same SMTP settings) and it can send all the emails.

So the problem is that the store can not: send password reset email, order status change email, test email... I'v seen some people saying it is an translation error. But how can it be translation error if the testing e-mail is sent in english to my store domain, and can not be sent to my gmail? This is clearly prestashop bug, but how can I fix it?

edit: not sure if this matters but the store that doesn't work is on subdomain, the store that it works on is on domain. Server provider claims it's no difference for the server. So it has to be prestashop bug.

Edited November 19, 2018 by grzegorz123456 (see edit history)

[selectshop.at]

You already solved the problem ? 

Check also smtpd server logs. Perhaps firewall is now blocking your addresses due to blacklisted somewhere (zen.spamhouse or something else), or another problem (recent setting/udate of firewall) is blocking the mails.