Steps to fix NULL disclaimer on outgoing emails

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Problem:

Getting NULL at the end of outgoing emails for those domains which are not configured with domain-disclaimer.

Solution:

Configuring zimbraDomainMandatoryMailSignatureEnabled=TRUE on Global config enables disclaimer for all domains and adds (null) as the disclaimer.

Where zimbraAmavisDomainDisclaimerHTML and zimbraAmavisDomainDisclaimerText are still not configured.

As a workaround to prevent adding (null) from other domains' outgoing emails we need to configured blank disclaimer.

With these steps three empty disclaimer files (.b64, .html, .txt) generats on path "/opt/zimbra/data/altermime/"

zmprov md <OTHER-DOMAIN> zimbraAmavisDomainDisclaimerHTML ""
zmprov md <OTHER-DOMAIN> zimbraAmavisDomainDisclaimerText ""
./libexec/zmaltermimeconfig -e <OTHER-DOMAIN>   

Reported bug for this issue - https://bugzilla.zimbra.com/show_bug.cgi?id=101069

Submitted by: Heera Singh Koranga