To cribl or not to cribl.... (Part 2)
Working on a global project requires onboarding of many new data sources while complying to legal data residency requirements. While this...
top of page
Marc's Security Blog
Splunk, Email Security, PKI and more...
Search
Marc Luescher
Nov 3, 20212 min read
DMARC reporting issue when using Cisco Ironport ESA's with 14.0.0-698
We are one of the lucky customers which have completed the onboarding journey of becoming DMARC compliant in reject mode with 99%+ of our...
243 views0 comments
Marc Luescher
Jun 16, 20211 min read
To cribl or not to cribl....
Working on a global project requires onboarding of many new data sources while complying to legal data residency requirements. While this...
217 views0 comments
Marc Luescher
Jun 16, 20212 min read
Data Loss Prevention (DLP) with ESA 13.5.3-010
DLP for email is becoming more and more a requirement in the healthcare sector. As part of our rollout we have been piloting with a...
100 views0 comments
Marc Luescher
Jun 16, 20211 min read
Upgrading Cisco virtual appliances v 14.0
I guess there is always a moment when you get stuck with an upgrade. While trying to upgrade our virtual appliances from v 13.5 to the...
86 views0 comments
Marc Luescher
Jun 16, 20212 min read
HelpSystems acquires Agari to grow their Data Security Portfolio
I am following the email market closely since many years and there have been recent changes just to name a few : -Mimecast's acquisition...
49 views0 comments
Marc Luescher
Oct 9, 20201 min read
Agari - APP on Cisco ESA - To forward or not to forward
For users which also have an integration between the Cisco ESA's and Agari ATP or how Cisco calls' it Cisco APP. What should you do in...
110 views0 comments
Marc Luescher
Oct 8, 20202 min read
Google rejecting Salesforce DKIM signed messages
Another day in troubleshooting email connectivity issues for our end users. This one was a bit harder then usual. Our Salesforce QA team...
492 views0 comments
Marc Luescher
Oct 8, 20205 min read
Adding a warning message when the from, reply-to and sent by addresses mismatch
This blog article is an addition to the previous blogs about external warning messages based on requests I have received and feature and...
804 views0 comments
Marc Luescher
Aug 22, 20203 min read
Adding a warning message for external emails as a disclaimer... (part 2)
Every email admin most likely has seen one way or another of tagging external emails. While this sound like a very easy task there are...
2,164 views0 comments
Marc Luescher
Aug 22, 20205 min read
Adding a warning message for external emails to the subject... (part 1)
Every email admin most likely has seen one way or another of tagging external emails. While this sounds like a very easy task there are...
1,299 views1 comment
Marc Luescher
Aug 20, 20208 min read
What are all those global session limits about for Ironport ESA's ?
And why it is a good idea to understand what they are used for ... For those which prefer to read the Cisco admin manual first to get a...
2,537 views0 comments
Marc Luescher
Aug 19, 20202 min read
Combining the best of all worlds for email security - High Level Mail Flow Inbound
We have made the decision over the last 18 months to further strengthen our email security stack for incoming email by combining the best...
169 views0 comments
Marc Luescher
Aug 13, 20202 min read
New OWA O365 secure email HTML template getting blocked by Cisco ESA URL reputation filters
Another day in troubleshooting email connectivity issues for our end users. This one was a bit harder then usual. A user complained that...
159 views0 comments
Marc Luescher
Jun 11, 20201 min read
5 reasons on why I just started this blog
I am pretty new to the bloggin world, so today i'm going to give you 5 reasons why I started blogging. Having a source where I could...
55 views0 comments
Home: Blog2
bottom of page