Friday, November 30, 2012

DSN: Service unavailable (sendmail) (linux)

Error

sendmail does not send outbound emails due to the following errors


Unable to qualify my own domain name (HOSTNAME) -- using short name

qAU1XDDZ007482: qAU1XODZ007484: DSN: Service unavailable


Solution


1- Add a proper host name

sudo hostname domain.com



2- Change hosts file ( edit /etc/hosts )

sudo nano /etc/hosts

IP.IP.IP.IP domain.com


3- Restart sendmail

sudo service sendmail restart




Posted by Karim Ouda at 3:55 AM
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2 comments:

  1. UnknownMay 19, 2013 at 2:33 AM

    yaa that could be reason but apart from this your IP could be blacklisted,

    WR

    Subhash Chandra BIJARNIYA

    ReplyDelete
  2. amberMarch 25, 2014 at 2:46 AM

    i am facing same issue , whenever i send email through my sendmail MTA i got this error and i can't set host/ip for 000 email RCPT address, do you have solution?

    ReplyDelete

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