iOS Connection Problems

2017-11-07 Thread Asai
Greetings, We’re running Postfix 2.11.1 and have been having ongoing intermittent problems with iOS devices connecting to the SMTP service, or so it seems. Sometime, iOS devices don’t even seem to connect at all and they have to be restarted in order to connect. This is intermittent on some d

Re: iOS Connection Problems

2017-11-07 Thread Anvar Kuchkartaev
Have you checked the certificates of postfix (if SSL supported)‎ and firewall rules of the server?

Re: iOS Connection Problems

2017-11-07 Thread Wietse Venema
>Asai: > This problem has been very difficult to figure out, but before I > dive head first into debugging, I?m wondering if there have been > any known issues with iOS that have been addressed in later versions > of Postfix? Asai You might be better off figuring out what the failing sessions hav