I have a problem with two domains to which I can't send messages. The message is outbound with these logs:
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Debug delivery information for Message ID [55B0448A9B3C403187BF26A443BEA988.MAI]
02/15/23 08:46:20 ME-I0018: [55B0448A9B3C403187BF26A443BEA988.MAI] Outbound message from ([SMTP:my@domain]) requeued as [35E92E5490A54A42B3E2337280324577.MAI] to the target domain [domain]
02/15/23 08:46:20 ME-I0026: [35E92E5490A54A42B3E2337280324577.MAI] Sending message
02/15/23 08:46:20 ME-IXXXX: [35E92E5490A54A42B3E2337280324577.MAI] DNS resolved to the following record: IP Address=IP_ADDRESS, Family=2, Type=1, Protocol=6
02/15/23 09:03:00 ME-E0010: [35E92E5490A54A42B3E2337280324577.MAI] Outbound Error receiving response from remote server (error 10060) after 1000033 milliseconds. Server Response: (-). System timeout value is a maximum of 1000000 milliseconds.
02/15/23 09:03:00 ME-I1350: [35E92E5490A54A42B3E2337280324577.MAI] Attempting to connect to MX 2 of 4 (mx2.domain).
02/15/23 09:03:00 ME-IXXXX: [35E92E5490A54A42B3E2337280324577.MAI] DNS resolved to the following record: IP Address=IP_ADDRESS, Family=2, Type=1, Protocol=6
02/15/23 09:19:40 ME-E0010: [35E92E5490A54A42B3E2337280324577.MAI] Outbound Error receiving response from remote server (error 10060) after 1000031 milliseconds. Server Response: (-). System timeout value is a maximum of 1000000 milliseconds.
02/15/23 09:19:40 ME-I1350: [35E92E5490A54A42B3E2337280324577.MAI] Attempting to connect to MX 3 of 4 (mx4.domain).
02/15/23 09:19:40 ME-IXXXX: [35E92E5490A54A42B3E2337280324577.MAI] DNS resolved to the following record: IP Address=IP_ADDRESS, Family=2, Type=1, Protocol=6
02/15/23 09:36:20 ME-E0010: [35E92E5490A54A42B3E2337280324577.MAI] Outbound Error receiving response from remote server (error 10060) after 1000029 milliseconds. Server Response: (-). System timeout value is a maximum of 1000000 milliseconds.
02/15/23 09:36:20 ME-I1350: [35E92E5490A54A42B3E2337280324577.MAI] Attempting to connect to MX 4 of 4 (mx3.domain).
How can we solve this problem?