imap

Hi I have a problem with Mailplus Server. mailplus server is working well in LAN. But I try to connect to th NAS from Internet with thunderbird; I can't to get the emails. However I can send emails but I can't received nothing. thundebird don't received folder, emails, nothing. It can't connect...

I have a severe Problem since a September update of the Mailserver. I cannot move Mails from other Sources to my mailbox on my Synology via IMAP. I use the latest Updates on DSM 6.2.2-24922 Update 3 . I don't get any error message. It worked all for years and it stills works fine between...