The issue with sending to a specific email is as follows:
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: connect from localhost.localdomain[127.0.0.1]
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: BFD2FDE6189: client=localhost.localdomain[127.0.0.1], orig_client=Exchange2022.cmlabs.com.cn[192.168.10.19]
Sep 19 17:22:50 pmg postfix/cleanup[1401915]: BFD2FDE6189: message-id=<7230cce786ba4d66ad21973e84b760dc@cmlabs.com.cn>
Sep 19 17:22:50 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Sep 19 17:25:20 pmg postfix/smtp[1401916]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=150, delays=0.03/0.03/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.255]:25: Connection timed out)
Sep 19 17:31:19 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:33:49 pmg postfix/smtp[1402062]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=659, delays=508/0.03/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.252]:25: Connection timed out)
Sep 19 17:46:19 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:48:49 pmg postfix/smtp[1402391]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=1558, delays=1408/0.09/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.253]:25: Connection timed out)
I want to change "d181996b.ess.barracudanetworks.com" to "d181996a.ess.barracudanetworks.com". How can I do this?
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: connect from localhost.localdomain[127.0.0.1]
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: BFD2FDE6189: client=localhost.localdomain[127.0.0.1], orig_client=Exchange2022.cmlabs.com.cn[192.168.10.19]
Sep 19 17:22:50 pmg postfix/cleanup[1401915]: BFD2FDE6189: message-id=<7230cce786ba4d66ad21973e84b760dc@cmlabs.com.cn>
Sep 19 17:22:50 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:22:50 pmg postfix/smtpd[1401914]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Sep 19 17:25:20 pmg postfix/smtp[1401916]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=150, delays=0.03/0.03/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.255]:25: Connection timed out)
Sep 19 17:31:19 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:33:49 pmg postfix/smtp[1402062]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=659, delays=508/0.03/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.252]:25: Connection timed out)
Sep 19 17:46:19 pmg postfix/qmgr[1399539]: BFD2FDE6189: from=<haibin.liang@cmlabs.com.cn>, size=2508, nrcpt=1 (queue active)
Sep 19 17:48:49 pmg postfix/smtp[1402391]: BFD2FDE6189: to=<jackie.xue@cbridgecap.com>, relay=none, delay=1558, delays=1408/0.09/150/0, dsn=4.4.1, status=deferred (connect to d181996b.ess.barracudanetworks.com[209.222.82.253]:25: Connection timed out)
I want to change "d181996b.ess.barracudanetworks.com" to "d181996a.ess.barracudanetworks.com". How can I do this?