hi i checked other topics with same subject but couldnt solve my problem
i run woocommerce on virtualmin and customers cant pay on site , i checked syslog and mail.log and saw :
Jun 20 16:56:33 hamid dovecot: imap-login: Login: user=<info@ariandigi.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=898, secured, session=<IedV5Iao+KJ/AAAB>
Jun 20 16:56:33 hamid dovecot: imap(info@ariandigi.com): Connection closed (close finished 0.014 secs ago) in=337 out=3239
Jun 20 16:56:33 hamid postfix/smtpd[899]: connect from localhost[127.0.0.1]
Jun 20 16:56:33 hamid postfix/smtpd[899]: ABA1EFFE69: client=localhost[127.0.0.1]
Jun 20 16:56:33 hamid postfix/cleanup[903]: ABA1EFFE69: message-id=<1592672193.889@ariandigi.com>
Jun 20 16:56:33 hamid postfix/qmgr[31885]: ABA1EFFE69: from=<info@ariandigi.com>, size=630, nrcpt=1 (queue active)
Jun 20 16:56:33 hamid postfix/smtpd[899]: disconnect from localhost[127.0.0.1] helo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Jun 20 16:56:33 hamid dovecot: imap(info@ariandigi.com): Connection closed (UID STORE finished 0.031 secs ago) in=716 out=2323
Jun 20 16:56:34 hamid dovecot: imap-login: Login: user=<info@ariandigi.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=908, secured, session=<MsFk5Iao/KJ/AAAB>
Jun 20 16:56:34 hamid dovecot: imap(info@ariandigi.com): Connection closed (close finished 0.006 secs ago) in=233 out=2494
Jun 20 16:56:36 hamid postfix/smtp[904]: ABA1EFFE69: host mta5.am0.yahoodns.net[67.195.204.73] said: 421 4.7.0 [TSS04] Messages from 185.211.59.144 temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM command)
Jun 20 16:56:36 hamid postfix/smtp[904]: ABA1EFFE69: lost connection with mta5.am0.yahoodns.net[67.195.204.73] while sending RCPT TO
Jun 20 16:56:38 hamid postfix/smtp[904]: ABA1EFFE69: to=<hamid.azizi@rocketmail.com>, relay=mta6.am0.yahoodns.net[98.136.96.76]:25, delay=4.4, delays=0.06/0.03/4.2/0.19, dsn=4.7.0, status=deferred (host mta6.am0.yahoodns.net[98.136.96.76] said: 421 4.7.0 [TSS04] Messages from 185.211.59.144 temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM command))
Jun 20 17:00:01 hamid CRON[1631]: (root) CMD (/etc/webmin/status/monitor.pl)
Jun 20 17:03:46 hamid postfix/qmgr[31885]: ABA1EFFE69: from=<info@ariandigi.com>, size=630, nrcpt=1 (queue active)
Jun 20 17:03:48 hamid postfix/smtp[3311]: ABA1EFFE69: host mta5.am0.yahoodns.net[67.195.204.79] said: 421 4.7.0 [TSS04] Messages from 185.211.59.144 temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM command)
Jun 20 17:03:48 hamid postfix/smtp[3311]: ABA1EFFE69: lost connection with mta5.am0.yahoodns.net[67.195.204.79] while sending RCPT TO
Jun 20 17:03:49 hamid postfix/smtp[3311]: ABA1EFFE69: to=<hamid.azizi@rocketmail.com>, relay=mta6.am0.yahoodns.net[98.136.96.77]:25, delay=436, delays=432/0.03/3.5/0.18, dsn=4.7.0, status=deferred (host mta6.am0.yahoodns.net[98.136.96.77] said: 421 4.7.0 [TSS04] Messages from 185.211.59.144 temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM command))
Jun 20 17:05:01 hamid CRON[3557]: (root) CMD (/etc/webmin/status/monitor.pl)
so i thought its mail server problem , i tested with virtualmin user “info@ariandigi.com” i could recieve mail but i couldnt send to yahoo or gmail or all other .
i checked mail.err i got :
Jun 17 06:27:36 hamid postfix/postfix-script[30148]: fatal: the Postfix mail system is not running
payment in websites is related to mail server ? how can i fix it ?
update :
the resault of “host -t mx ariandigi[dot]com” is :
ariandigi[dot]com mail is handled by 0 mail.ariandigi[dot]com.
i did set mx record in dns provider