PowerMTA™ 3.5r16 
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Queue Detail
namelibero.it/vmta1
recipients631
kbytes2,636.3
active connections0
pausedno
modenormal
Last Errors
timeerror
2025-07-18 09:55:41SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:55:41SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:55:41SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:55:41SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:45:39SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:45:38SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:45:38SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:45:38SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:29:27SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
2025-07-18 09:29:27SMTP service unavailable: "421 smtp-08.iol.local smtp-08.iol.local No reverse DNS [smtp-08.iol.local; LIB_120]" received from smtp-in.libero.it (213.209.1.129) while connected from server1.sjfdn.cn (10.0.0.237) to smtp-in.libero.it (213.209.1.129)
Queue Settings
type smtp dkim-headers-canon relaxed
add-gm-token no dkim-add-body-limit no
allow-cancel-during-transfer yes dkim-add-timestamp no
allow-priority-interruption yes dkim-expire-after never
allow-priority-interruption-during-transfer no ignore-8bitmime no
assume-delivery-upon-data-termination-timeout no ignore-chunking no
auth-password log-connections no
auth-username log-commands no
backoff-max-connect-rate unlimited log-data no
backoff-max-msg-rate unlimited log-resolution no
backoff-notify log-transfer-failures no
backoff-reroute-to-virtual-mta max-events-recorded 10
backoff-retry-after 1h max-cold-virtual-mta-msg 0/day
backoff-to-normal-after never max-errors-per-connection 10
backoff-to-normal-after-delivery no max-msg-per-connection 10
bounce-after 2d12h max-connect-rate unlimited
bounce-upon-5xx-greeting yes max-msg-rate 50/sec
bounce-upon-no-mx no max-rcpt-per-message 1000
bounce-upon-pix-transfer-failure no max-smtp-out 4
bounce-upon-transfer-failure no pix-bug-workaround yes
check-mfrom-outbound no queue-priority 50
check-pra-outbound no require-starttls yes
connect-timeout 2m retry-after 10m
data-send-timeout 3m retry-upon-new-mail no
default-smtp-port 25 route
deliver-local-dsn yes smtp-data-termination-timeout 10m
dk-sign yes smtp-greeting-timeout 5m
dkim-identity sender-or-from smtp-pattern-list
dkim-sign yes smtp-553-means-invalid-mailbox no
dkim-algorithm rsa-sha1 use-starttls no
dkim-body-canon relaxed use-unencrypted-plain-auth no