We have a server with sendmail that does not send emails anymore, we want one who can investigate what the problem is and solve it.
We expect that it should be able to be solved within a maximum of one hour and it must be done via anydesk on our computer.
Error from log
Mar 20 12:01:58 web1 sendmail[15639]: x2KB1wHX015639: from=<xxx@[login to view URL]>, size=1211, class=0, nrcpts=2, msgid=<[login to view URL]@[login to view URL]>, proto=ESMTP, daemon=MTA, relay=[login to view URL] [[login to view URL]]
Mar 20 12:01:59 web1 sendmail[15641]: STARTTLS=client, relay=outlook.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES256-SHA384, bits=256/256
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1wHX015639: to=<xx@[login to view URL]>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=151211, relay=outlook.com. [[login to view URL]], dsn=5.7.1, stat=User unknown
Mar 20 12:01:59 web1 sendmail[15641]: STARTTLS=client, relay=mx.unoeuro.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256/256
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1wHX015639: to=<xx@[login to view URL]>, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=151211, relay=mx.unoeuro.com. [[login to view URL]], dsn=5.7.1, stat=Service unavailable
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1wHX015639: x2KB1xHX015641: DSN: Service unavailable
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1xHX015641: to=<xx@[login to view URL]>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=32506, relay=mx.unoeuro.com. [[login to view URL]], dsn=5.7.1, stat=Service unavailable
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1xHX015641: x2KB1xHY015641: return to sender: Service unavailable
Mar 20 12:01:59 web1 sendmail[15641]: x2KB1xHY015641: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33530, dsn=2.0.0, stat=Sent
Mar 20 12:02:46 web1 sendmail[15714]: x2KB2khO015714: from=<xxx@[login to view URL]>, size=1377, class=0, nrcpts=2, msgid=<[login to view URL]@[login to view URL]>, proto=ESMTP, daemon=MTA, relay=[login to view URL] [[login to view URL]]
Mar 20 12:02:46 web1 sendmail[15716]: STARTTLS=client, relay=mx.outforce.dk., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256/256
Mar 20 12:02:53 web1 sendmail[15716]: x2KB2khO015714: to=<mph@[login to view URL]>, delay=00:00:07, xdelay=00:00:07, mailer=esmtp, pri=151377, relay=mx.outforce.dk. [[login to view URL]], dsn=2.0.0, stat=Sent (OK id=1h6Yze-0008Ke-KL)
Mar 20 12:02:53 web1 sendmail[15716]: STARTTLS=client, relay=mx.unoeuro.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256/256
Mar 20 12:02:54 web1 sendmail[15716]: x2KB2khO015714: to=<xxxx@[login to view URL]>, delay=00:00:08, xdelay=00:00:01, mailer=esmtp, pri=151377, relay=mx.unoeuro.com. [[login to view URL]], dsn=5.7.1, stat=Service unavailable
Mar 20 12:02:54 web1 sendmail[15716]: x2KB2khO015714: x2KB2shO015716: DSN: Service unavailable
Mar 20 12:02:54 web1 sendmail[15716]: x2KB2shO015716: to=<xxxx@[login to view URL]>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=32672, relay=mx.unoeuro.com. [[login to view URL]], dsn=5.7.1, stat=Service unavailable
Mar 20 12:02:54 web1 sendmail[15716]: x2KB2shO015716: x2KB2shP015716: return to sender: Service unavailable
Mar 20 12:02:54 web1 sendmail[15716]: x2KB2shP015716: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33696, dsn=2.0.0, stat=Sent