Today when I was running a workshop of alias, I got this error
postdrop: warning: unable to look up public/pickup: no such file or directory

I googled the solution out, seems need to mannually create a pipe for it.
mkfifo /var/spool/postfix/public/pickup
then the problem is solved.

After couples of tests, I figure out the reason. When I start the postfix, I HAVEN'T TURN SENDMAIL AND DO ALTERNATIVES YET!!
So I guess because when the postfix start, the email pipe is occupied by sendmail. So when I try to use postfix to send mail, it can not use the pipe or create the pipe.
So the solution I guess is simply restart the service after alternative. Should be solved.

In the video, it did not shows up again because this time I do things IN RIGHT ORDER!

In the video, I installed a postfix client and use alias to test several emails.


About Lei

I am an IT specialist with over 10 year experience - years on Automation, on-Premise or Azure.

I am happy to develop however never want be a full time developer. Only do what I have to do. If it has to be PowerShell,HTML, PHP, CSS, C#, VBS or JS, front end or backend, so be it, doesn't matter!

Spent years with Windows, SCCM, SharePoint, SQL and Exchange servers. For last several years, I have been actively working under On Premise > Azure environment.


Current Certificates:
    Microsoft® Certified-
  • -Enterprise Administrator
  • -Database Administrator
  • -SharePoint Administrator
  • -Administering and Deploying SCCM 2012
Red Hat Certified Technician
ITIL V3 Foundation - Practitioner

Working on Azure Certificates now and hopefully they can stop upgrading their questions one day! GIVE ME A BREAK!

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