Postfix is installed but how do I test it

Question

I tried everything  I read online to test  and I can t get email to go out  telnet  lt IP gt  25 EHLO MAIL FROM   lt from-email gt  RCPT TO   lt recipient-email gt  DATA Type message here     lt Enter gt    gt   I even tried this  and when I type the period  I get nothing - but postfix is installed

User · Answer

To check whether postfix is running or not

sudo postfix status

If it is not running, start it.

sudo postfix start

Then telnet to localhost port 25 to test the email id

ehlo localhost
mail from: root@localhost
rcpt to: your_email_id
data
Subject: My first mail on Postfix

Hi,
Are you there?
regards,
Admin
.

Do not forget the . at the end, which indicates end of line

User · Answer

I just got this working  with my main issue being that I don t have a real internet hostname  so answering this question in case it helps someone   You need to specify a hostname with HELO  Even so  you should get an error  so Postfix is probably not running   Also  the    is not a command  The     on a single line without any text around it is what tells Postfix that the entry is complete  Here are the entries I used   telnet localhost 25  says connected  EHLO howdy com  returns a bunch of 250 codes  MAIL FROM  somebody blah com RCPT TO   use a real email address you want to send to  DATA  type whatever you want on muliple lines     this on a single line tells Postfix that the DATA is complete    You should get a response like   250 2 0 0 Ok  queued as 6E414C4643A  The email will probably end up in a junk folder  If it is not showing up  then you probably need to setup the  Postfix on hosts without a real Internet hostname   Here is the breakdown on how I completed that step on my Ubuntu box   sudo vim  etc postfix main cf smtp generic maps   hash  etc postfix generic  add this line somewhere   edit or create the file  generic  if it doesn t exist  sudo vim  etc postfix generic  add these lines  I don t think it matters what names you use  at least to test  his localdomain local             hisaccount hisisp example her localdomain local             heraccount herisp example  localdomain local                hisaccount local hisisp example then run  postmap  etc postfix generic  this needs to be run whenever you change the  generic file    Happy Trails

[ubuntu] Postfix is installed but how do I test it?

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