reject: RCPT from unknow

[Hala]

Hi
This email was send successfully since 6 month ... since yesterday this email wasrejecting .. The log file


May 11 23:24:29 smtp postfix/submission/smtpd[9712]: NOQUEUE: reject: RCPT from unknown[192.168.1.132]: 554 5.7.1 <unknown[192.168.1.132]>: Client host rejected: Access denied; from=<monitor@xxx.yy> to=<zz@xxx.yy> proto=ESMTP helo=< kkk>
May 11 23:24:29 smtp postfix/submission/smtpd[9712]: NOQUEUE: reject: RCPT from unknown[192.168.1.132]: 554 5.7.1 <unknown[192.168.1.132]>: Client host rejected: Access denied; from=<monitor@xxx.yy> to=<zz@xxx.yy> proto=ESMTP helo=<kkk>

The sender and recipient addresses are locally
I dont make any change to configuration

[quanah]

Hi
This email was send successfully since 6 month ... since yesterday this email wasrejecting .. The log file


May 11 23:24:29 smtp postfix/submission/smtpd[9712]: NOQUEUE: reject: RCPT from unknown[192.168.1.132]: 554 5.7.1 <unknown[192.168.1.132]>: Client host rejected: Access denied; from=<monitor@xxx.yy> to=<zz@xxx.yy> proto=ESMTP helo=< kkk>
May 11 23:24:29 smtp postfix/submission/smtpd[9712]: NOQUEUE: reject: RCPT from unknown[192.168.1.132]: 554 5.7.1 <unknown[192.168.1.132]>: Client host rejected: Access denied; from=<monitor@xxx.yy> to=<zz@xxx.yy> proto=ESMTP helo=<kkk>

The sender and recipient addresses are locally
I dont make any change to configuration

Looks like someone changed the MTA. I would guess that zimbraMtaMyNetworks was modified.

[Hala]

The Range of IP's are not deleted or modified ... All the ip are in" MTA trusted network "

BR

[Hala]

i also check the file
vi /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
permit_mynetworks, reject_sender_login_mismatch

No any modofication in it....