SwiftMailer - 550 Bad HELO - Host impersonating domain name

[hakeryk2]

Hello,

I am having a problem while I was upgrading my Prestashop version but in 1.6.1.5 there was an update for SwiftMailer https://github.com/PrestaShop/PrestaShop/pull/5214  which I had to rollback because I have kinda weird mailing smtp settings.

Those are my settings, I changed IP address to some random one and domain name just to present what is going on:



When I try to send test email then I have this error

Quote

 550 Bad HELO - Host impersonating domain name (domain.pl)

I have different server for mails. I think that is because SMTP host is provided with IP address instead of mail.domain.pl but I can't do it otherwise.

Funfact: Those settings are working on localhost!!! I can send email from localhost with these settings.

Edited January 26, 2018 by hakeryk2 (see edit history)