Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-16 Thread Stuart Henderson
On 2021-07-15, Sebastian wrote: > Best solution is to offer a webmail with TOTP or SQRL or similiar secure = > auth method. > > Then have that webmail adds IP or country into trusted list, so if you = > want to access IMAP mail or SMTP mail from hotel wifi, you have to = > simply do one single log

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread justina colmena ~biz
PN server, >and thus im able to lock out all logins outside from VPN. > >-Ursprungligt meddelande- >Från: dovecot-boun...@dovecot.org För >@lbutlr >Skickat: den 15 juli 2021 18:37 >Till: dovecot mailing list >Ämne: Re: 2FA/MFA with IMAP & postfix/submission >

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Laura Smith
> Perhaps there are dovecot (and postfix submission) options to at least > restrict access by IP? Restricting by IP is soon going to become very tedious, especially if you are dealing with more than a small number of users, and especially once post-COVID travel comes back and people start con

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Laura Smith
> Client certs appears to be a good solution. > > What's the process for managing them with more than a hundred client accounts? If you've got the budget ... MDM. If you don't, you can probably hack together some sort of self-service system. > > I believe the problem they are trying to solve is

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Rick Romero
Quoting Benny Pedersen : On 2021-07-15 16:49, Alex wrote: What about something like what we used to do with pop-b4-smtp to at least restrict by IP address? no, pop was not handle million of users share one single nat ip, weekforce cant handle that either, so allow_net cant do any better

Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Sebastian
iling list Ämne: Re: 2FA/MFA with IMAP & postfix/submission On 2021 Jul 15, at 08:52, Alex wrote: > Client certs appears to be a good solution. A solution, certainly. A GOOD solution? Not really. > What's the process for managing them with more than a hundred client accounts?

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Benny Pedersen
On 2021-07-15 16:49, Alex wrote: What about something like what we used to do with pop-b4-smtp to at least restrict by IP address? no, pop was not handle million of users share one single nat ip, weekforce cant handle that either, so allow_net cant do any better there all i think is possibl

Re: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread @lbutlr
On 2021 Jul 15, at 08:52, Alex wrote: > Client certs appears to be a good solution. A solution, certainly. A GOOD solution? Not really. > What's the process for managing them with more than a hundred client accounts? And that's the first issue. The second issue is "my primary device is not ava

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Sebastian Nielsen
Problem is that not many client support it - especially mobile ones.So wireguard VPN is the way to go, much simpler for the users. Originalmeddelande Från: Rick Romero Datum: 2021-07-15 17:04 (GMT+01:00) Till: dovecot@dovecot.org Ämne: Re: Sv: 2FA/MFA with IMAP & pos

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Michael Peddemors
On 2021-07-15 8:07 a.m., Laura Smith wrote: Perhaps there are dovecot (and postfix submission) options to at least restrict access by IP? Restricting by IP is soon going to become very tedious, especially if you are dealing with more than a small number of users, and especially once post-CO

Re: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Michael Peddemors
On 2021-07-15 7:54 a.m., Laura Smith wrote: Are there multi-factor options available? Mandating good old-fashioned client-certificates is most likely your best bet in terms of delivering the best user-experience. Or, you can use the CLIENT_ID SMTP extension for dovecot/postfix.. For the

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Rick Romero
Quoting Alex : Hi, Unfortunately the best way to do multifactor authentication today is to use OAUTH2, which isn't currently supported for own installations. Or you can use client certs. If you want to use some kind of MFA with tokens, you end up having to feed your token all the time.

Re: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Laura Smith
> Are there multi-factor options available? Mandating good old-fashioned client-certificates is most likely your best bet in terms of delivering the best user-experience.

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Alex
Hi, > Unfortunately the best way to do multifactor authentication today is to use > OAUTH2, which isn't currently supported for own installations. Or you can use > client certs. > > If you want to use some kind of MFA with tokens, you end up having to feed > your token all the time. So the best

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Alex
Hi, > > Unfortunately the best way to do multifactor authentication today is > > to use OAUTH2, which isn't currently supported for own installations. > > Or you can use client certs. > > > > If you want to use some kind of MFA with tokens, you end up having to > > feed your token all the time. So

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-15 Thread Benny Pedersen
On 2021-07-15 07:26, Aki Tuomi wrote: Unfortunately the best way to do multifactor authentication today is to use OAUTH2, which isn't currently supported for own installations. Or you can use client certs. If you want to use some kind of MFA with tokens, you end up having to feed your token all

Re: Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-14 Thread Aki Tuomi
f it stops working, is to login once via the web client. > > -Ursprungligt meddelande- > Från: dovecot-boun...@dovecot.org För Alex > Skickat: den 15 juli 2021 02:10 > Till: dovecot@dovecot.org > Ämne: 2FA/MFA with IMAP & postfix/submission > > Hi, I have a dov

Sv: 2FA/MFA with IMAP & postfix/submission

2021-07-14 Thread Sebastian
ogin as invalid if so not. The only thing a client needs to do to get his IMAP or SMTP client to work again if it stops working, is to login once via the web client. -Ursprungligt meddelande- Från: dovecot-boun...@dovecot.org För Alex Skickat: den 15 juli 2021 02:10 Till: dovecot@dovecot.or

Re: 2FA/MFA with IMAP & postfix/submission

2021-07-14 Thread PGNet Dev
On 7/14/21 8:08 PM, Alex wrote: Hi, I have a dovecot-2.3.13 system on fedora34 with a few hundred IMAP4 accounts, as well as postfix users using submission. Clients are using primarily Outlook on Windows and old squirrelmail. Are there multi-factor options available? google roundcube + 2FA nu

2FA/MFA with IMAP & postfix/submission

2021-07-14 Thread Alex
Hi, I have a dovecot-2.3.13 system on fedora34 with a few hundred IMAP4 accounts, as well as postfix users using submission. Clients are using primarily Outlook on Windows and old squirrelmail. Are there multi-factor options available? If it is not available, do you have any recommendations on wh