Not sure if this relates to any of your problems: I had a few days ago problem with a Outlook 2016 stopping receiving email suddenly.
I chased this down to Outlook claming the server did not support the correct authentication method, which was strange as nothing had changed on the server side for a while. The same user's iPhone with the same username/password was working at the same time correctly. What I think it was Dovecot caching credentials somehow wrong: differet caching for iPhone and Outlook causing the problem. I solved it by changing cache_key=%u entries to cache_key=%u%r in /etc/dovecot/toaster.conf so Outlook connecting from different IP got cached differently than the iPhone. Don't know what will happen when they appear in the same WLAN though... Why did this not happen before, I don't know, perhaps Outlook has been updated and uses now some other auth by default than before? Not sure if this relates to your problem at all, as I am running pretty old Dovecot... Best, Peter On Mon, Aug 6, 2018 at 9:19 AM, ChandranManikandan <kand...@gmail.com> wrote: > Hi Eric, > > Yes, we are using Ubuntu latest 64 bit version, > We tried to configure the imap email and we got the attached message and > couldn't configure it. > > Any one face the same issue. > > Please help me to resolve the issue. > > As well the same issue on Outlook 2016 unable to receive emails. > > Everything work well before but latest version having the issue. > Is it need to install any certificate on our server. > > Am using COS 6 32 bit , Qmailtoaster. > > > > On Mon, Aug 6, 2018 at 1:22 PM, ChandranManikandan <kand...@gmail.com> > wrote: >> >> Hi Eric, >> >> Yes, we are using Ubuntu latest 64 bit version, >> We tried to configure the imap email and we got the attached message and >> couldn't configure it. >> >> Any one face the same issue. >> >> Please help me to resolve the issue. >> >> As well the same issue on Outlook 2016 unable to receive emails. >> >> Everything work well before but latest version having the issue. >> Is it need to install any certificate on our server. >> >> Am using COS 6 32 bit , Qmailtoaster. >> >> >> >> On Mon, Aug 6, 2018 at 5:59 AM, Eric Broch <ebr...@whitehorsetc.com> >> wrote: >>> >>> >>> Just an FYI. >>> If your client is using Ubuntu 18.04 there is an issue with the network >>> stopping on the local pc. >>> To test get your client to use the GUI network manager and disconnect >>> wait >>> a few seconds then reconnect. >>> We are chasing a similar issue now for a client. >>> To see if this is the issue either try pinging out of the network or >>> loading a web page. >>> >>> best wishes >>> Tony White >>> >>> On 03/08/18 01:16, Eric Broch wrote: >>> >>> Can you check if the password for the account is saved in Thunderbird on >>> the Ubuntu desktop? >>> >>> In Thunderbird go to Tools->Options->Security->Saved Passwords >>> >>> >>> On 8/2/2018 4:52 AM, ChandranManikandan wrote: >>> >>> Hi Friends, >>> >>> One of our user getting disconnected frequently from thunderbird (Asking >>> passwords) and webmail also not opening. >>> >>> After restart the dovecot service it will working again. >>> But the password is asking frequently. >>> I have restarted the dovecot service frequently. >>> >>> This problem for only one user rest of other users not an issue. >>> >>> I couldn't trace the logs in /var/log/maillog and /var/log/dovecot.log >>> >>> Anyone face the same issue . >>> >>> Could anyone help me to resolve this issue. >>> >>> Note: User is using Ubuntu Desktop with Thunderbird. >>> >>> -- >>> Thanks & Best Regards, >>> Manikandan.C >>> >>> >>> -- >>> Eric Broch >>> White Horse Technical Consulting (WHTC) >>> >>> >> >> >> >> -- >> Thanks & Best Regards, >> Manikandan.C > > > > > -- > Thanks & Best Regards, > Manikandan.C > > --------------------------------------------------------------------- > To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com > For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com --------------------------------------------------------------------- To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
