How? :)
On May 3, 2017 5:25:51 PM GMT+02:00, Rupert Gallagher <[email protected]> wrote: >Problem solved. > >Sent from ProtonMail Mobile > >On Tue, May 2, 2017 at 3:46 PM, Rupert Gallagher <[email protected]> >wrote: >Hello, > >Thunderbird has been bugging us with connection errors. Dovecot is >installed on a local server that carries a local IP and a public IP. >When Thunderbird on a local client connects successfully, Wireshark >shows a SYN request from the client's IP on LAN to the public IP of the >server, followed by the ACK from the same public IP. When Thunderbird >on the same local client fails to connect, Wireshark shows a SYN >request from the client's IP on LAN to the public IP of the server, >followed by the ACK from the server's LAN address, the client does not >accept the ACK as valid and sends a new SYN request. The loop >eventually leads to time-out. At the client's console, the DNS query of >the IMAP server always responds with the server's public IP address. > >It is evident from Wireshark that the dovecot server sends ACKs from >two IPs. Is it possible to instruct Dovecot to use the public IP only?
