It seems like some Game-Developers (Epic-Games) uses mailgun for their mailcommunication with gamers, and mailgun seems also to use several outgoing server-ips. A customer of mine informed me, that he had to disable greylisting to receive Mails from Epic games again... After adding mailgun.co to the whitelist, it works again... would that be an usefull entry for the official whitelist?
It seems like some Game-Developers (Epic-Games) uses mailgun for their mailcommunication with gamers, and mailgun seems also to use several outgoing server-ips. A customer of mine informed me, that he had to disable greylisting to receive Mails from Epic games again... After adding mailgun.co to the whitelist, it works again... would that be an usefull entry for the official whitelist?