# Net::SMTPUnknownError

**URL:** <https://www.ruby-forum.com/t/net-smtpunknownerror/156391>\
**Category:** Rails\
**Created:** [December 26, 2008, 3:27pm UTC](https://www.ruby-forum.com/t/net-smtpunknownerror/156391 "2008-12-26T15:27:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tanker](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/f17d59/32.png) [@tanker](https://www.ruby-forum.com/u/tanker)\
**Post date:** [December 26, 2008, 3:27pm UTC](https://www.ruby-forum.com/t/net-smtpunknownerror/156391/1 "2008-12-26T15:27:59Z")

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when i’m trying to send mail i got this error

Net::SMTPUnknownError (relaylock: Unable to connect to Plesk Database:  
Can’t connect to local MySQL server through socket  
‘/var/lib/mysql/mysql.sock’ (2)  
):

and it do not send the mail  
any helps please

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<div class="post-metadata">

**Author:** ![tanker](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/f17d59/32.png) [@tanker](https://www.ruby-forum.com/u/tanker)\
**Post date:** [December 26, 2008, 4:02pm UTC](https://www.ruby-forum.com/t/net-smtpunknownerror/156391/2 "2008-12-26T16:02:04Z")

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Oooh sorry i forgot to start mysqld deamon  
/etc/init.d/mysqld start