Allow systems with selected ip addresses to relay email through Zimbra without needing authentication There are two ways to set and check this Global – applied to all servers set zmprov mcf zimbraMtaMyNetworks “10.1.1.0/24 [fe80::5054::]/64 127.0.0.0/8 [::1]/128” check zmprov gcf … Continue reading →
How to search sent/received e-mails from a particular email id through command line(CLI) Solution If you have a multi-server installation – do this on the logging server Search for up to 1000 emails UserA@example.com has from UserB@example.com $ zmmailbox … Continue reading →
On the source server – su – cp -a /opt/zimbra/ssl /sslbk tar -czf /sslbk.tgz /sslbk Copy sslbk.tgz to the / directory on the server you want to copy the certificate to On the destination server stop the zimbra service. On … Continue reading →
Getting a lot of email spam which has similar subject lines? You can reject it before it gets put into a mailbox As zimbra execute zmprov gs `zmhostname` zimbraMtaHeaderChecks You should see: zimbraMtaHeaderChecks: pcre:/opt/zimbra/conf/postfix_header_checks We need to add a new … Continue reading →
I have found the following two sites helpful in finding issues with the configuration of SSL secured web sites https://ssltools.digicert.com/checker/ https://www.ssllabs.com/ssltest/analyze.html Test which ciphers (TLS, SSL, etc) are enabled nmap -sV –script ssl-enum-ciphers -p 443 www.yourdomain.com Ref: https://nmap.org/nsedoc/scripts/ssl-enum-ciphers.html
Continue reading →For Zimbra 8.5 and newer Execute as the zimbra user: zmprov mcf zimbraMtaSmtpdTlsCiphers high zmprov mcf zimbraMtaSmtpdTlsProtocols ‘!SSLv2,!SSLv3’ zmprov mcf zimbraMtaSmtpdTlsMandatoryCiphers high zmprov mcf zimbraMtaSmtpdTlsExcludeCiphers ‘aNULL,MD5,DES’ Within 2 minutes, zmconfigd will update postfix for you, and the system will be … Continue reading →
Create an account w/ password of test1234 for email address user@abc.com with the name First Z Last and make them change their password the first time they log on zmprov createAccount user@abc.com ‘test1234’ zimbraPasswordMustChange TRUE displayName ‘First Z. Last’ \ … Continue reading →
The ‘Server status’ tab in the admin console shows an extra entry for “localhost”, or a server that you removed from the system some time ago (using the zmprov deleteServer command) with all services crossed out. Resolution: First get the output … Continue reading →
Purpose With Dumpster the users (and more importantly, admins) can recover deleted files (Emails, Contacts, Calendar or apointments, Tasks, Files, etc.) from a period of time. This feature is really useful to recover specific files deleted by mistake, and makes … Continue reading →
zmprov -l gaa -s `zmhostname`
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