Tools

Our free tools for Mac OS X Server Mail Services – spamtrainer and mailbfr – have been downloaded more than 100’000 times and are helping system administrators looking after Mac OS X Servers from 10.3 to 10.13.

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Tutorials

Our free tutorials and whitepapers related to Mac OS X Server Mail and Web Services have been downloaded more than 500’000 times. The tutorials are available for a wide range of topics and for Mac OS X Server versions from 10.4 to 10.13.

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Consultancy

While we are happy to provide free support through our Tutorials, FAQs and the occasional e-mail advice, it cannot replace personalised support. A professional can fix in a matter of hours what could take you days of trial and error.

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How can I manage the Mail Queue

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View the Mail Queue sudo mailq Need details of a message in the queue? Every message has a Queue ID. Copy the ID after running the mailq command. sudo find /var/spool/postfix/deferred/ -name ECCB516EB4017 -exec cat {} \; Delete a message sudo postsuper -d ECCB516EB4017 Delete all messages in the mail queue sudo postsuper -d ALL

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How to reset Profile Manager data

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OS X Server 10.8 (Mountain Lion) To reset the Profile Manager data stored in postgres: sudo /Applications/Server.app/Contents/ServerRoot/usr/share/devicemgr/backend/wipeDB.sh

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Which TCP ports should be open/mapped for a mail server?

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This FAQ is geared towards new administrators looking for guidance on a proper mail server setup. As a best practice, your mail server should require SSL encryption for IMAP, POP and Webmail. SMTP should have SSL enabled, but not required. A typical OS X Server mail server for a small business would have these ports […]

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Why does SMTP fail for some users: Helo command rejected

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By default, OS X Servers expect a fully qualified domain name (FQDN) as a greeting (helo) for all SMTP connections. The server expects: helo mail.mydomain.com Many apps (Outlook and some phones) don’t send a FQDN and instead send something like: helo computer1 The server will reject this connection, and you will see this in your […]

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What does this warning mean: not owned by _postfix: /Library/Server/Mail/Data/mta/./guid_device_maps.plist

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On a 10.8 Server, if you are seeing: [code]warning: not owned by _postfix: /Library/Server/Mail/Data/mta/./guid_device_maps.plist[/code] You can safely ignore this error. It’s informational and does not suggest a problem. The file is not created by Postfix, but by OS X Server, thus the permissions collide and Postfix is not able to fix the permissions.

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How to flush local dns cache

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10.7 – 10.8 sudo killall -HUP mDNSResponder 10.5 – 10.6 sudo dscacheutil -flushcache 10.4 lookupd -flushcache

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