Search found 32 matches

by opsystem
Wed May 29, 2019 11:57 am
Forum: Administrators
Topic: CVE-2019-9670 being actively exploited
Replies: 239
Views: 127942

Re: CVE-2019-9670 being actively exploited

@elby and @sony2sony (and everyone intereseted in finding infected files) You can check your files against original ones from official .tgz, just extract the jetty part (for 8.6 it's in zcs-NETWORK-8.6.0_GA_1153.RHEL7_64.20141215151204\packages\zimbra-store-8.6.0_GA_1153.RHEL7_64-20141215151204.x86_...
by opsystem
Mon May 27, 2019 10:42 am
Forum: Administrators
Topic: Zimbra AJAX Webmail not loading
Replies: 126
Views: 31478

Re: Zimbra AJAX Webmail not loading

j122yka : Solved issue with upload refuse by : chmod 755 /opt/zimbra/data/tmp/ chmod 755 /opt/zimbra/data/tmp/upload/ Cannot find unusual cron entries (looking with # crontab -e -u zimbra) and in the files under /opt/zimbra/conf/crontabs/ Changed root password after reboot. Any help appreciated to ...
by opsystem
Fri Apr 26, 2019 5:42 pm
Forum: Administrators
Topic: Some clarifications about DoS Filter: block IPs after a number of failed login attempts
Replies: 3
Views: 1038

Re: Some clarifications about DoS Filter: block IPs after a number of failed login attempts

Ok here is a brief recap after furhter analysis: 1. As pup_seba said, the feature only prevent an IP from logging into a mailbox. The offending IPs can still reach the server . 2+3. I still can’t found where banned IPs are cached. I can confirm that filtering mailbox log for “Access to IP xxx.xxx.xx...
by opsystem
Fri Apr 26, 2019 2:10 pm
Forum: Administrators
Topic: Some clarifications about DoS Filter: block IPs after a number of failed login attempts
Replies: 3
Views: 1038

Re: Some clarifications about DoS Filter: block IPs after a number of failed login attempts

Hello pup_seba, thank you so much for taking time to answer my questions! Yes, I already read Mark Stone’s article, that’s one of the sources I based my config on. I’ve no “suspended” entries in my logs so I suppose that something is wrong with my server. I’ll try to dig deeper, although I hope that...
by opsystem
Fri Apr 26, 2019 12:29 pm
Forum: Administrators
Topic: Some clarifications about DoS Filter: block IPs after a number of failed login attempts
Replies: 3
Views: 1038

Some clarifications about DoS Filter: block IPs after a number of failed login attempts

Hello all, I’m dealing with some brute force attacks on our 8.6 installation and I was trying to activate the IP auto-ban feature of the DoS filter, as the documentation says: “Starting in ZCS 8.5, you can block IPs for a period of time after a number of failed login attempts” Now I can’t really fin...
by opsystem
Fri Apr 19, 2019 7:24 pm
Forum: Administrators
Topic: outbound relay working from queue but not from user (8.6)
Replies: 1
Views: 847

outbound relay working from queue but not from user (8.6)

Hello, we just upgraded from ver. 7 to 8.6, all went good, normal mail flow is working. Our server is configured for outgoing SMTP authentication with these settings (I’ve double checked them) zmprov ms [server] zimbraMtaSmtpSaslPasswordMaps texthash:/customfolder/sasl_passwd zmprov ms [server] zimb...
by opsystem
Fri Dec 07, 2018 4:31 pm
Forum: Administrators
Topic: Do not give up on external POP3 account after connection failure
Replies: 3
Views: 1407

Re: Do not give up on external POP3 account after connection failure

Hello, it seems it is a network problem between or the account you tried to pop has no POP capability. See the message in the log : aused by: java.net.SocketTimeoutException: Read timed out Regards, Yes, the read timeout accurs because the POP server is unreachable. What I want here is that the dow...
by opsystem
Sun Oct 21, 2018 2:45 pm
Forum: Administrators
Topic: Do not give up on external POP3 account after connection failure
Replies: 3
Views: 1407

Do not give up on external POP3 account after connection failure

Hi all! As title says, I added an external POP3 source to an account on my 8.7 CE installation. Everything runs fine, until the POP3 server sometimes goes offline and stays unreachable for some hours. We can do nothing about that. Problem is that Zimbra stops trying to connect to the external source...

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