Solved

Resubmit previous CSR for Renewing SSL cert redhat mail server

Posted on 2014-02-21
5
924 Views
Last Modified: 2014-02-22
Hi,

We have a redhat mail server with an SSL cert that us due for renewal. I've done renewals for IIS web servers but I've never done one for a Linux mail server. I know where the pem files and mail config are located. What I'm not sure about is submitting the generated csr  to geotrust for the renewal. Since we have a csr already generated from the first time we purchased the cert, can I just resubmit that csr file or do I need to generate a new csr? Its the exact same mail server and domain name. If I do need to generate a new csr how do I go about doing that on redhat.

This is related to an earlier question that was answered, but I forgot about the csr submission piece
http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Q_28348780.html
0
Comment
Question by:binovpd
  • 3
  • 2
5 Comments
 
LVL 58

Accepted Solution

by:
Gary earned 500 total points
ID: 39878435
There is no problem using the same csr but some SSL providers do require a new CSR and it is better for security.
0
 

Author Comment

by:binovpd
ID: 39878616
Thanks Ace. If I do generate a new CSR is this information documented here at the cert site the same method I would use for mail? Not sure how to actually generate the cert on redhat if its just for mail not a webserver.

https://knowledge.rapidssl.com/support/ssl-certificate-support/index?page=content&actp=CROSSLINK&id=SO22411
0
 
LVL 58

Expert Comment

by:Gary
ID: 39878709
Doesn't matter that it is for mail or server the methodology and procedures are the same.

p.s.
Ace is the rank, Cathal is the name ;o)
0
 

Author Comment

by:binovpd
ID: 39879108
Thanks Cathal (ace) =). So I got my cert I followed everything to a tee and now when I try veryfing SSL with smtp Im getting an error.

I've doubled checked all my certs are in the right spot, I checked the paths in sendmail.mc  everything is correct. And yes I did restart sendmail. What gives. Am I missing something.

didn't found starttls in server response, try anyway...
139872684926792:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:s23_clnt.c:699:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 315 bytes and written 147 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
---
0
 

Author Comment

by:binovpd
ID: 39879161
Well I figured out the problem and there is nowhere this was documented. When you change out the mail.key and mail.pem (for mail the cert needs to be a pem no crt) you have to make sure these two files specifically have permissions of 600.

They are owned by root and can only be read and written to by root (permission 600). Once I changed those permissions it worked.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
EDI Solution or comparable? 2 39
Handling abuse of email address 7 35
Exchange 2010, Implementing On-Prem Archiving 3 28
how to configure linux OS using Ubuntu 7 45
As tax season makes its return, so does the increase in cyber crime and tax refund phishing that comes with it
Google Drive is extremely cheap offsite storage, and it's even possible to get extra storage for free for two years.  You can use the free account 15GB, and if you have an Android device..when you install Google Drive for the first time it will give…
In this video we show how to create an Address List in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Organization >> Ad…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question