check with
http://www.robtex.com
black list checker
use dnsstuff then follow delisting links
http://www.dnsstuff.com/
http://www.mxtoolbox.com/blacklists.aspx
http://www.au.sorbs.net/lookup.shtml
http://www.spamhaus.org/lookup.lasso
http://www.barracudanetworks.com/reputation/?pr=x.x.x.x
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SSH : No matching host key type found. Their offer: ssh-rsa,ssh-dss
Got this while connecting to my mikrotik router via ssh Unable to negotiate with <ip address> port <ssh port>: no matching hos...
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got: Warning: dl() [function.dl]: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20060613/php_mapscript...
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getting NOQUEUE: reject: RCPT from unknown[x.x.x.x]: 554 5.7.1 : Relay access denied ? in your zimbra admin go to: server > mta >...
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On Zimbra (v. 8.6.0_GA_1153) web client, if you've reached your maximum attachment size, as shown in the message below... ... and y...
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