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Re: Persistent failure to lookup hostname

From: Robert Pluim
Subject: Re: Persistent failure to lookup hostname
Date: Tue, 04 Oct 2022 09:37:53 +0200

>>>>> On Mon, 03 Oct 2022 20:15:19 -0400, Stefan Monnier 
>>>>> <monnier@iro.umontreal.ca> said:

    Stefan> Lars Ingebrigtsen [2022-10-04 01:58:28] wrote:
    >> Stefan Monnier <monnier@iro.umontreal.ca> writes:
    >>> My Gnus session occasionally gets into a state where it insists that my
    >>> mail server's DNS name isn't found.
    >> Is this with nnimap?  (I'm mostly just wondering whether this could
    >> somehow be tied to the async code paths, which are more complicated than
    >> the synchronous code paths and keep more state -- but nnimap doesn't use
    >> async, so that would rule out that.)

    Stefan> Hmm... yes, I think it's always been for my IMAP server.

One thing you absolutely need to check in these situations is if DNS queries
are making it out of Emacs at all. e.g.

    sudo tcpdump -i any -n udp and port 53

If theyʼre not, then maybe itʼs an issue with resolv.conf, as Madhu


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