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Hello Friends, Some bad guys are always SPAMMING some domains hosted in my qmail-vpopmail-5.3.20+mysql boxes. They usually send 10000 or more emails to a domain with less than 50 valid emails trying to guess it. Then, of course, comes thousands of MAILER-DAEMON messages and then, the queue grows-up too fast and the delivery too slow. I knew two patch that can help me : qmail-smtpd-chkusr and qmail-verifyrcpt. My question is : What the difference between them? I think the second one a= re related to LDAP or something, so the best option should be the qmail-smtpd-chkusr, Am I right? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2-rc1-SuSE (GNU/Linux) iD8DBQE/DbLGZYXsPMybvmIRAkK0AKCfr20cYaVT7oCCMVVbrBnmaTdkxwCfdOOo V4h5ZU+kiDGimiji/AI9yyQ= =Xo0r -----END PGP SIGNATURE-----