There are more and more mail servers that are blocking based on items such as not accepting null senders, no PTR, from a dialup or residential account, listed in spam databases and such. If you provide your domain and mail server IP, I can do some testing. John Tolmachoff MCSE CSSA Engineer/Consultant eServices For You www.eservicesforyou.com -----Original Message----- From: satish garimalla [mailto:satishgarimalla@xxxxxxxxxxx] Sent: Thursday, July 17, 2003 1:20 PM To: [ExchangeList] Subject: [exchangelist] Cannot send mails to some particular Domains http://www.MSExchange.org/ Hi Folks, This seems strange to me .We are not able to send mails to some particular domains.Rest is fine.Like ,I found out something arround 10 different domains where we cannot send mails .Is that some thing like they block our domain as spam sending domains.If so how can I correct this .It's been quite a while since we had this problem.can anybody please help me ? Satish Garimalla _____ Watch Hallmark. Enjoy cool movies. Win hot prizes! <http://g.msn.com/8HMBENIN/2749??PS=> ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: johnlist@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')