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All mails rejected by Spamhaus; Error: open resolver
#antispam
#mailserver
#mediani
#spam
#spamhaus
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Today suddenly all incoming mails ware rejected by my mailserver. People contacted me with information, that they received undelivered notification with status of: 5.7.1 Service unavailable; Client host [SENDER IP] blocked using sbl-xbl.spamhaus.org; Error: open resolver; Now what the heck is open resolver? At first I
3 months ago
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sokai
Wirklich wirksamer Schutz für E-Mail-Adressen | CSS, E-Mail, Spam, Unicode | Dr. Web Magazin
#antispam
#email
#security
#spam
#webdesign
#webdev
14 years ago
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sokai
Anti Follower-SPAM
#antispam
#online
#spam
#tools
#twitter
#web
14 years ago
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sokai
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