08-27-2016 01:39 AM
Hi all,
Can anyone tell me for mail filters, what about this regex means
(?i)@abc\.com|@efg\.com
The bold on the top means what? I cannot find a reference on this , why there must have ?i on it
Can someone explain what is that use and meaning of it
Thanks
Solved! Go to Solution.
08-27-2016 02:50 AM
Hi,
The token (?i) that indicates the rest of the regular expression should be treated in case-insensitive mode. Placing this token at the beginning of a case-sensitive regular expression results in a completely insensitive match.
For example, the regular expression “(?i)example” matches Example, eXAmplE, and EXAMPLE.
Please check table "Regular Expression in Rules" of the user guide, as it contains the various regex used in ESA and their descriptions.
You can download the user guides from this link:
http://www.cisco.com/c/en/us/support/security/email-security-appliance/products-user-guide-list.html
Cheers,
Zaid Al-Ali
08-27-2016 05:03 AM
08-27-2016 02:50 AM
Hi,
The token (?i) that indicates the rest of the regular expression should be treated in case-insensitive mode. Placing this token at the beginning of a case-sensitive regular expression results in a completely insensitive match.
For example, the regular expression “(?i)example” matches Example, eXAmplE, and EXAMPLE.
Please check table "Regular Expression in Rules" of the user guide, as it contains the various regex used in ESA and their descriptions.
You can download the user guides from this link:
http://www.cisco.com/c/en/us/support/security/email-security-appliance/products-user-guide-list.html
Cheers,
Zaid Al-Ali
08-27-2016 08:46 AM
Hi,
Thanks for the well explained. Appreciate
08-27-2016 05:03 AM
08-27-2016 08:45 AM
Hi,
Thanks for the link, i get what it means
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