I have bombarded with spam. I check top and shift+m and there's a lot of perl and spam running process. I have check that we have one domain that accepts email even the address is not valid. Sad thing, client don't want me to have list of their emails included in our database so it accepts all.
Good thing we have another server with java as mta. It was running smoothly even it was bombarded with spam. It has also antispam designated for java also. I change their primary mx to this server and my mail server now has stable cpu load. ----- Original Message ---- From: Glennix glennix <[EMAIL PROTECTED]> To: Philippine Linux Users' Group (PLUG) Technical Discussion List <[email protected]> Sent: Thursday, February 28, 2008 10:18:39 AM Subject: Re: [plug] how to know if spam attack hi sir. first u can check with top, then SHIFT+p, if it's really ur smtp server that's eating up ur cpu. if u'r using postfix, top will show which part of postfix is eating it up. if it's queue manager, you can try setting-up a relay server then flush the queue to see if all mails will be dumped there. if u don't have a separate machine for relay, try deleting all mails in queue to see if it frees up cpu. queued mails can sometimes cause high cpu utilization. u can try using netstat to investigate a particular ip connecting to ur port 25. something like netstat -ant | grep EST | grep :25 would do. Nelson Serafica <[EMAIL PROTECTED]> wrote: Is there a way to know if you have been DoS in your mail server using netstat? I'm having a hard time knowing what eats the cpu load everytime I trying to up the mail server. Tired of spam? Yahoo! Mail has the best spam protection around http://ph.mail.yahoo.com_________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List [email protected] (#PLUG @ irc.free.net.ph) Read the Guidelines: http://linux.org.ph/lists Searchable Archives: http://archives.free.net.ph Never miss a thing. Make Yahoo your homepage. -----Inline Attachment Follows----- _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List [email protected] (#PLUG @ irc.free.net.ph) Read the Guidelines: http://linux.org.ph/lists Searchable Archives: http://archives.free.net.ph ____________________________________________________ Tired of spam? Yahoo! Mail has the best spam protection around http://ph.mail.yahoo.com
_________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List [email protected] (#PLUG @ irc.free.net.ph) Read the Guidelines: http://linux.org.ph/lists Searchable Archives: http://archives.free.net.ph
