Search found 23 matches

by reason2008
Thu Mar 01, 2018 10:32 am
Forum: Administrators
Topic: memcached amplification attack
Replies: 14
Views: 7614

Re: memcached amplification attack

Thank you very much!
by reason2008
Thu Mar 01, 2018 12:06 am
Forum: Administrators
Topic: memcached amplification attack
Replies: 14
Views: 7614

memcached amplification attack

Is this anything we need to be concerned about? My server is behind a firewall and doesn't allow the port addressed in the article.

https://blog.cloudflare.com/memcrashed- ... ort-11211/
by reason2008
Fri Apr 22, 2016 12:14 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 6197

Re: Preventing spoofed email

I've gotten both SPF and DKIM set up and working. I also have DMARC set up in DNS. I've sent some messages to gmail and I see that gmail is validating the SPF, DKIM, and DMARC records fine. I would like to be able to somehow prevent someone from spoofing the From: header in email messages to make it...
by reason2008
Thu Apr 14, 2016 3:01 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 6197

Re: Preventing spoofed email

My server is running 8.6. How can I tell whether or not DMARC is enabled and running?
by reason2008
Mon Mar 28, 2016 11:35 am
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 6197

Re: Preventing spoofed email

quanah wrote:and again, if you want to prevent people spoofing from MTAs that are not under your control, you need to implement DKIM and SPF.


Thanks. Definitely looking into it. I do have SPF set up. Haven't done anything with DKIM.
by reason2008
Sat Mar 26, 2016 3:11 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 6197

Re: Preventing spoofed email

I just wanted to know how to prevent someone from sending mail into our system from ceo@domain.com to bob@domain.com, and having bob click something bad. I want to know how to add sender restrictions in Zimbra the correct way, without it being overwritten with a restart or an update.
by reason2008
Fri Mar 25, 2016 3:05 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 6197

Preventing spoofed email

Hello, I'm looking at preventing local email addresses from being spoofed to send to local recipients. I've been following the article at the following link. The article seems to be missing a step for 8.6. The article shows how to create the hash database, but doesn't show how it's applied to the Zi...
by reason2008
Wed Apr 16, 2014 6:23 am
Forum: Administrators
Topic: Password age
Replies: 0
Views: 252

Password age

Hello,
I'm running Zimbra OSE 8.0.6. Is there a command that will tell me the age of a user's password? I would like to confirm whether or not a user had changed their password. I do not have a max age configured in Zimbra. Accounts do not expire.
Thanks,

Rod
by reason2008
Wed Sep 18, 2013 8:07 am
Forum: Administrators
Topic: Install without prompts
Replies: 1
Views: 390

Install without prompts

Hello,I'm running Zimbra 8.0.4 OSE. I have the production server synchronizing with a backup server on a regular basis. I have things set up so if I'm away on vacation and the production Zimbra server dies, my co-workers can bring up the backup server. Part of the process of bringing up the ...
by reason2008
Tue Dec 18, 2012 4:15 pm
Forum: Administrators
Topic: Problem to training spam
Replies: 4
Views: 628

Problem to training spam

I was having this problem. I found that there was an old message in the spam training account that zmtrainsa was having problems with. I deleted the message from the training account and the error went away.

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