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2
votes
1answer
90 views

550 Verification failed Sender verify failed (in reply to RCPT TO command)

Note: email addresses, domains, and ip addresses have been changed to protect the innocent Current Error: Apr 28 23:47:32 vps01 postfix/smtp[8012]: 2A03D6285EF9: to=<brian@somedomain.com>, ...
0
votes
0answers
82 views

Postfix rejects messages for only for some recipients

We have working SMTP Postfix server. It receive emails properly, but sending to some recipients is problem. Some recipients are returning this error: postfix/smtpd: NOQUEUE: reject: RCPT from ...
0
votes
1answer
87 views

Enforcing client verification in Apache just for a specific client certificate

I want to make my Apache web server accept SSL connections ONLY IF the client presents itself with a specific SSL client certificate. In other words, only ONE client is allowed and it MUST use a ...
0
votes
4answers
119 views

Is it safe to use not ECC RAM for cold backup server?

I need home computer for simple backup task (just cronjob on Linux, it will run once per day): Download file from my production server (in datacenter, it's good server with Xeons & ECC RAM etc.) ...
0
votes
1answer
140 views

dfs replication verification

Was wondering if there is a way to verify every single file from the source server is replicated over to the secondary server. I understand there's a command get-dfsrfilehash that can verify the files ...
1
vote
0answers
117 views

Verify rdiff backup integrity

I am using rdiff for my differential backup. Recently an issue happened where all versions of my backup failed to patch correctly and rdiff returning an error 106 which after investigation is a code ...
1
vote
1answer
656 views

Google Authenticator - generate new set of emergency codes

I use Google Authenticator on my SSH servers with Andoid app for generating codes. After I run $ google-authenticator application create set of emergyncy keys: https://www.google.com/chart?chs=...
-1
votes
1answer
263 views

postfix mail gateway recipient address verification for some domains

I want to do the recipient address verification for some domains, but many domains I want to exclude from verification are subdomains of domains that are being verified and mysql (table where keys are ...
1
vote
2answers
509 views

How Can You Tell If IPSec Is Installed on Cisco

How can I tell if my Cisco router has IPSec installed? I went into configuration mode to see about setting up a crypto policy, but the 'crypto' keyword isn't available. Is this an indication that it ...
0
votes
1answer
913 views

OpenDKIM - verifying mail forwarded by mailing lists

I'm using OpenDKIM for verifying signed mails that are incoming to my mail server and use it as a spam addon (if dkim is broken, mail lands in Junk). However, I'm getting lot of false-positives with ...
18
votes
7answers
30k views

How to avoid lftp Certificate verification error?

I'm trying to get my Pelican blog working. It uses lftp to transfer the actual blog to ones server, but I always get an error: mirror: Fatal error: Certificate verification: subjectAltName does not ...
0
votes
5answers
703 views

“System File Checker” (sfc-like) for Linux

I am trying to locate a tool, not unlike either the "sfc" command on Windows or the "sysck" command on AIX, which can verify that the file contents, ownerships and permissions are correct. The "...
0
votes
1answer
1k views

Best practices for mass file transfer with verification?

I'm looking for a bit of advice on transferring a several files from Windows-based workstations to a Linux Server running Ubuntu Server LTS 10.04. At the moment I've been mounting the shares on the ...
0
votes
1answer
291 views

Postfix connection cache / address verification probes

Is Postfix connection cache also applicable for address verification probes? My setup of 2 frontends with 1 backend sometimes runs into trouble under high load. Frontends verify recipients on the ...
1
vote
1answer
363 views

Check if an e-mail address exists before sending [closed]

Is there a mechanism for verifying an e-mail address exists before sending?
0
votes
1answer
2k views

How do I receive email sent to postmaster?

I have a VPS server that I would like to get an SSL certificate for, and the CA needs an email address to verify that I own the domain. The options are: postermaster@mydomain.com, hostmaster@mydomain....
7
votes
8answers
861 views

How do you verify a restore?

What tool(s) would you use to verify that a restored file structure is whole and complete? My environment is a Windows Server 2008 file server. (We use tape for backup, but that is inconsequential.) ...
0
votes
3answers
262 views

Why is Yahoo blocking our email address verifications and bouncing them back [duplicate]

I have a legitimate site www.angelescity.ph a Free Classifieds site, once someone posts an advert a verification email is sent.. Yahoo has been blocking them, not delivering and bouncing them back, ...
4
votes
3answers
323 views

Know (at a glance) your Mac client is up-to-date

We have over a thousand Mac clients, and occassionally issue changes that affect many or all of them (such as installing new software, creating local user accounts, or applying updates). I want to ...