Home » Kerio User Forums » Kerio Connect » Hide or replace X-Mailer info in header - How?

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If I sending mail through Kerio SMTP service (25 port or Webmail interface), in resulting mail next few strings appears

Message-ID: <20060226124450.89ff85e3<_at_>mail>
Date: Sun, 26 Feb 2006 15:44:50 +0300
X-Mailer: Kerio MailServer 6.1.2 WebMail

How I can to replace or hide strings from Header?
All "security" options like Advanced Options Hide IP, Hide server name etc. on.

Thank you.

[Updated on: Sun, 26 February 2006 13:52]


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Kerio MailServer currently does not have this option. I've filed a feature request for you.

Joshua Thomas

Joshua Thomas
Technical Support Manager
2350 Mission College Blvd, Suite 400
Santa Clara, CA 95054
Phone: (408) 496-4500
Fax: (408) 496-6902


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I was wondering about this too. Although we can disable "Show program name and version in network communication for non-authenticated users", to provide some extra security, we cannot disable the X-Mailer header.

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Why do you consider showing the X-Mailer header an insecurity? Just curious ...

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TorW wrote on Mon, 19 April 2010 09:53
Why do you consider showing the X-Mailer header an insecurity?

The software and version you're running is one piece of information of possible interest to a hacker. To tailor an attack, it's useful to first know what software you're running. Secondly, this information doesn't need to be exposed. Google "security hide version".

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Are you missing critical functionality proposed by users to Kerio which Kerio doesn't care about?[ 7 votes ]
1.Yes 5 / 71%
2.No 2 / 29%

Sooo, if I am looking at my watch right, its 11 YEARS later and the option to disable X-mailer in the header is still missing.
Great work guys, really. Is there any slower company to implement new functionality proposed by its users?
I have been watching this forum for a while now and so many users are missing critical parts like "user renaming" (this request is also a couple of years old), etc. You really don't care about what users want, am I right?


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Kraken, this feature exists since Kerio Connect 9.0 (released November 18, 2015)
You can remove any header via server rules.


Have a nice day.

[Updated on: Wed, 15 February 2017 09:13]

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