Timeout when trying to connect to IMAP account

General
1

A user can’t connect to ANY of his IMAP accounts. He says that he doesn’t use LittleSnitch but this symptoms are the same. What else could cause this?

    hostname: imap.gmail.com
    port: 993
    socket2Connect:
      connect2:
        connectImplicitSsl:
          connectSocket_v2:
            connect_domain:
              ckDnsResolveDomainIPv4_n:
                num_app_defined_ns: 0
                revert_to_old_dns:
                  domain: imap.gmail.com
                  ck_getaddrinfo:
                    getAddressInfo:
                      hostOrIpAddr: imap.gmail.com
                    --getAddressInfo
                  --ck_getaddrinfo
                --revert_to_old_dns
              --ckDnsResolveDomainIPv4_n
              ipv4_address: 142.251.168.109
              timeout waiting for connect to complete;
              timeoutMs: 10000
              failedWaitToConnect: Socket operation timeout.
              Failed to make TCP connection before applications max wait time to connect.
              connectTimeoutMs: 10000
            --connect_domain
          --connectSocket_v2
2

Maybe it’s an IPv4/v6/(VPN Tunneling) thing?

3

Can you explain with more detail what you mean?

4

does his account works in thunderbird?

grafik
grafik460×619 24.3 KB

grafik

have he enabled imap there?
my settings in gmail web front end.

grafik
grafik1131×916 175 KB

5

He said that his accounts worked until mid November. But perhaps he disabled the IMAP account by accident. Good idea!

6

with oauth2 there would pop up a google login where you allow external apps access.

7

OAuth is on my to-do list. I effing hate the stupid approval processes of Google, Microsoft and Apple.

1 Like
8

Not really, but searching for issues related to ckDnsResolveDomainIPv4_n leading often to WAN connections w/o IPv4 support or tunneled VPN connections.