Possible solutions of your questions

Hello. Your website will be available to You in the near future. We apologize for the inconvenience.
In a data center network issues

Hello. please describe your problem

your site works fine

how is configured your mail client?

csf.deny: IP # lfd: (smtpauth) Failed SMTP AUTH login from IP (AZ/Azerbaijan/-): 5 in the last 3600 secs - Tue Feb 18 15:23:37 2014

check the settings for sending mail

do not confuse two completely different concepts - the \"not working site\" and \"website not works only for me.\"

your website is an excellent way works for any visitor, but You potamu that your ip was blocked by firewall from AZ that you every 30 seconds check your email

Feb 19 10:53:52 matra lfd[156655]: pop3d - 61 logins in 3203 secs from IP (AZ/Azerbaijan/-) for EMAIL exceeds 60/hour - *Blocked in csf* for 397 secs [LT_POP3D]
Feb 19 11:00:29 matra lfd[207006]: Incoming IP:110 temporary block removed
Feb 19 11:00:29 matra lfd[207006]: Incoming IP:995 temporary block removed
Feb 19 11:57:15 matra lfd[599780]: pop3d - 61 logins in 3406 secs from IP (AZ/Azerbaijan/-) for EMAIL exceeds 60/hour - *Blocked in csf* for 194 secs [LT_POP3D]
Feb 19 12:00:31 matra lfd[620093]: Incoming IP:110 temporary block removed
Feb 19 12:00:31 matra lfd[620093]: Incoming IP:995 temporary block removed
Feb 19 12:58:53 matra lfd[1045641]: pop3d - 61 logins in 3502 secs from IP (AZ/Azerbaijan/-) for EMAIL exceeds 60/hour - *Blocked in csf* for 98 secs [LT_POP3D]
Feb 19 13:00:33 matra lfd[10839]: Incoming IP:110 temporary block removed
Feb 19 13:00:33 matra lfd[10839]: Incoming IP:995 temporary block removed
Feb 19 13:58:08 matra lfd[431006]: pop3d - 61 logins in 3455 secs from IP (AZ/Azerbaijan/-) for EMAIL exceeds 60/hour - *Blocked in csf* for 145 secs [LT_POP3D]
Feb 19 14:00:34 matra lfd[450593]: Incoming IP:110 temporary block removed
Feb 19 14:00:34 matra lfd[450593]: Incoming IP:995 temporary block removed
Feb 19 14:59:16 matra lfd[878482]: (PERMBLOCK) IP (AZ/Azerbaijan/-) has had more than 4 temp blocks in the last 86400 secs - *Blocked in csf* [LT_POP3D]

why you`ll delete? makes no sense to check the mail more often than every 5 minutes. configure your mail client correctly

OK