mail not sending but receiving

when sending mail it showing success but receiver not receiving mail

[root@vps ~]# tail -f /var/log/maillog


Sep 24 16:31:59 vps postfix/qmgr[15673]: C5EBAA37A: removed
Sep 24 16:32:01 vps postfix/pickup[15672]: EDAF1A379: uid=1001 from=<classma>
Sep 24 16:32:01 vps postfix/cleanup[15760]: EDAF1A379: message-id=<20200924163201.EDAF1A379@vps.yourclass.site>
Sep 24 16:32:02 vps opendkim[15688]: EDAF1A379: no signing table match for 'classma@vps.yourclass.site'
Sep 24 16:32:02 vps opendkim[15688]: EDAF1A379: no signature data
Sep 24 16:32:02 vps postfix/qmgr[15673]: EDAF1A379: from=<classma@vps.yourclass.site>, size=888, nrcpt=1 (queue active)
Sep 24 16:32:02 vps postfix/local[15767]: EDAF1A379: to=<classma@vps.yourclass.site>, orig_to=<classma>, relay=local, delay=0.04, delays=0.03/0/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Sep 24 16:32:02 vps postfix/qmgr[15673]: EDAF1A379: removed
Sep 24 16:32:14 vps postfix/smtpd[15914]: timeout after END-OF-MESSAGE from unknown[127.0.0.1]
Sep 24 16:32:14 vps postfix/smtpd[15914]: disconnect from unknown[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=1 commands=4
Sep 24 16:33:02 vps postfix/pickup[15672]: 214AAA37A: uid=1001 from=<classma>
Sep 24 16:33:02 vps postfix/cleanup[15760]: 214AAA37A: message-id=<20200924163302.214AAA37A@vps.yourclass.site>
Sep 24 16:33:02 vps opendkim[15688]: 214AAA37A: no signing table match for 'classma@vps.yourclass.site'
Sep 24 16:33:02 vps opendkim[15688]: 214AAA37A: no signature data
Sep 24 16:33:02 vps postfix/qmgr[15673]: 214AAA37A: from=<classma@vps.yourclass.site>, size=888, nrcpt=1 (queue active)
Sep 24 16:33:02 vps postfix/local[15767]: 214AAA37A: to=<classma@vps.yourclass.site>, orig_to=<classma>, relay=local, delay=0.08, delays=0.07/0.01/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Sep 24 16:33:02 vps postfix/qmgr[15673]: 214AAA37A: removed

plz somebody help

checked with mail-tester.com

Your email client, plugin or extension said "sent", and it sure did. But your email got stopped just after, and never got sent.
Why? Your SMTP or web host is probably blocking your emails. Quite common. Get in touch with them now to find out.



how to resolve this?

please anyone.

rebuild postfix mail server but still mail not going.

anybody help plz

you should check with your system admin or cwp support dns, postifx and dovecot.