connection to dovecot times out about every ten minutes

[Cameron Simpson]

On 28Apr2021 17:23, Marco Fioretti <marco.fioretti at gmail.com> wrote:
>I honestly don't know if the old modem had an integrated router, and I
>have already disposed of it. What I am sure of is that I had NOT
>changed anything in its settings for many months, if not years, and
>everything was working without problems until a few weeks ago, when I
>posted here. Also, why would any modem come from the factory, or be
>remotely updated by an ISP in ways that interfere with an absolutely
>basic use case of hundreds millions of people, that is keeping one's
>email client connected to its IMAP server for hours?

These are good points. That the behaviour was new and the modem not 
pretty much invalidates my idea, unless a recent mutt IMAP change (or, I 
suppose, the upstream dovecot) made the connection more idle at a TCP 
level. But I'm grasping at straws.

>As for the new one, I cannot check it right now because I am not at
>home, but it is working, so whatever it does, it is OK.

Q: How many user support people does it take to change a light bulb?
A: We have an exact copy of the light bulb here and it seems to be
   working fine.  Can you tell me what kind of system you have?

Glad to hear this. Cheers,
Cameron Simpson <cs at cskk.id.au>