PowerMTA™ 3.5r16 

Help
Queue Detail
namestu.sdnu.edu.cn/vmta1
recipients275
kbytes1,816.7
active connections0
pausedno
modenormal
Last Errors
timeerror
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [M0BS2NE0lcNPBsTT/ev+1+unMiipUbAQRzU10VKFwFHKqHio+SN7nNU= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [NSjjVjUmCg+CUkzUl4CvndpgepRiqsfyJ68ur0iKz+xmXs8mCjUJwh4= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [NLAtegSadZQLKMK8X7ZFPfW9oLTg8rYyNF0Xobv+wJB6jHG+Wn7pr3A= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [ORLs+t4qA9N4nUHElV00uCnIDp7bBfLpdZjfx2sbzaiBg20N60YiXVM= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [Nu9f9OZKLqwsyW2BE7IoO536ODvxIRC0yRzAXqkZJ/nad2vAapTb2k8= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz1.qq.com (183.47.101.122) while connected from server1.weojf.cn (10.0.0.176) to mxbiz1.qq.com (183.47.101.122)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [OGqA/Ptf1JSOpsY6WQLzbfaRUoskjvYagH9w104RNaVi3m0lKTIphro= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz1.qq.com (183.47.101.122) while connected from server1.weojf.cn (10.0.0.176) to mxbiz1.qq.com (183.47.101.122)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [MM26xUelqNM/NgP2qIspu2g4X2sk3kGNGnK2JGxMqtu9MIxNPvqayxE= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz1.qq.com (183.47.101.122) while connected from server1.weojf.cn (10.0.0.176) to mxbiz1.qq.com (183.47.101.122)
2025-07-18 04:58:29SMTP service unavailable: "450 Too many concurrent connections from your IP [MpV5F2PDAuMbskMK/eQxwrECxGrv4E8tofc1VlKEPf/R/HoM0aVX8Oo= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz1.qq.com (183.47.101.122) while connected from server1.weojf.cn (10.0.0.176) to mxbiz1.qq.com (183.47.101.122)
2025-07-18 04:48:26SMTP service unavailable: "450 Too many concurrent connections from your IP [NLAtegSadZQLvIRAPhKH5t7vktVe+s27XzRvLS5ub2FOYMtFOeRazOg= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.68) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.68)
2025-07-18 04:48:26SMTP service unavailable: "450 Too many concurrent connections from your IP [N/u+XgB1UQZ7luuwInan22GvH4ZV+loKIb5ZV7PhLXn0kqWCoVtnKhw= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.68) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.68)
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