Postfix got covered?

Question

postfix

Yesterday everything worked, now it does not send mail. Here are the logs of 3 shipments:

Jan 23 12:51:38 ih813240 postfix/cleanup[14737]: E2CC624956: message-id=<[email protected]>
Jan 23 12:51:38 ih813240 postfix/qmgr[14075]9 : from=<>, size=4518, nrcpt=1 (queue active)
Jan 23 12:51:38 ih813240 postfix/bounce[14740]: 658E524955: sender non-delivery notification: E2CC624956
Jan 23 12:51:38 ih813240 postfix /qmgr[14075]: 658E524955: removed
Jan 23 12:51:39 ih813240 postfix/local[14742]: E2CC624956: to=, relay=local, delay=0.07, delays=0.03/0.01/0/0.03, dsn=2.0 .0, status=sent (delivered to mailbox)
Jan 23 12:51:39 ih813240 postfix/qmgr[14075]: E2CC624956: removed
Jan 23 12:53:00 ih813240 postfix/pickup[14074]: 72FFD24955: uid=33 from =
Jan 23 12:53:00 ih813240 postfix/cleanup[14737]: 72FFD24955: message-id=<[email protected]>
Jan 23 12:53:00 ih813:240 postfix/qmgr[14075D] from=, size=465, nrcpt=1 (queue active)
Jan 23 12:53:01 ih813240 postfix/smtp[14739]: 72FFD24955: to=, relay=mx1.e1.ru[212.193.163.24]:25, delay =0.8, delays=0.03/0/0.24/0.52, dsn=5.7.1, status=bounced (host mx1.e1.ru[212.193.163.24] said: 554 5.7.1 Service unavailable; Client host [194.67.198.74] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/194.67.198.74 (in reply to RCPT TO command))
Jan 23 12:53:01 ih813240 postfix/cleanup[14737]: 3D35A24956 : message-id=<[email protected]>
Jan 23 12:53:01 ih813240 postfix/bounce[14740]: 72FFD24955: sender non-delivery notification: 3D35A24956
Jan 23 12:53:01 ih813240 postfix/qmgr[14075]: 72FFD24955: removed
Jan 23 12:53:01 ih postfix/qmgr[14075]: 3D35A24956: from=<>, size=2665, nrcpt=1 (queue active)
Jan 23 12:53:01 ih813240 postfix/local[14742]: 3D35A24956: to=, relay=local, delay =0.05, delays=0.02/0/0/0.03, dsn=2.0.0, status=sent (delivered to mailbox)
Jan 23 12:53:01 ih813240 postfix/qmgr[14075]: 3D35A24956: removed

What to do? I've rebooted several times, nothing helps.

Answer 1

What's the point of rebooting?
service unavailable; Client host [194.67.198.74] blocked using zen.spamhaus.org
Say hello to spamhouse.