Hi We are trying to send mails to AOL.com and to AIM.com from pbcnet.com domain. But when we try to send it through moduleone.com domain it goes perfectly fine and never gets bounced back. PBCNET.COM is hosted on LINUX. DNS Entries of PBCNET.COM are as follows:- <javascript:newHelpWindow('24')> Help A Records (5) Name IP <javascript:newHelpWindow('30')> Help FO / SM <javascript:newHelpWindow('31')> Help pbcnet.com. <https://www.dnsmadeeasy.com/servlet/domainlist##> 202.53.97.17 Off / Off <https://www.dnsmadeeasy.com/servlet/domainlist##> N/A Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> * <https://www.dnsmadeeasy.com/servlet/domainlist##> 202.53.97.17 Off / Off <https://www.dnsmadeeasy.com/servlet/domainlist##> N/A Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> mail <https://www.dnsmadeeasy.com/servlet/domainlist##> 202.53.97.10 Off / Off <https://www.dnsmadeeasy.com/servlet/domainlist##> N/A Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> mail2 <https://www.dnsmadeeasy.com/servlet/domainlist##> 202.53.97.11 Off / Off <https://www.dnsmadeeasy.com/servlet/domainlist##> N/A Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> www <https://www.dnsmadeeasy.com/servlet/domainlist##> 202.53.97.17 Off / Off <https://www.dnsmadeeasy.com/servlet/domainlist##> N/A Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> <https://www.dnsmadeeasy.com/servlet/domainlist##> <javascript:newHelpWindow('25')> Help CNAME Records (0) <https://www.dnsmadeeasy.com/servlet/domainlist##> <javascript:newHelpWindow('26')> Help MX Records (2) Mail for this host Sent to this server MX Level pbcnet.com. <https://www.dnsmadeeasy.com/servlet/domainlist##> mail2 5 Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> pbcnet.com. <https://www.dnsmadeeasy.com/servlet/domainlist##> mail 10 Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> <https://www.dnsmadeeasy.com/servlet/domainlist##> <javascript:newHelpWindow('27')> Help HTTP Redirection Records (0) <https://www.dnsmadeeasy.com/servlet/domainlist##> <javascript:newHelpWindow('28')> Help TXT Records (0) <https://www.dnsmadeeasy.com/servlet/domainlist##> <javascript:newHelpWindow('29')> Help PTR Records (1) Name System 10.97.53.202 <https://www.dnsmadeeasy.com/servlet/domainlist##> mail Remove <https://www.dnsmadeeasy.com/servlet/domainlist##> Error Message #1 The original message was received at Wed, 17 May 2006 14:53:57 +0530 from mail.pbcnet.com [127.0.0.1] ----- The following addresses had transient non-fatal errors ----- <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aim.com> > ----- Transcript of session follows ----- 451 4.4.1 reply: read error from mailin-04.mx.aol.com. 451 4.4.1 reply: read error from mailin-01.mx.aol.com. ... while talking to mailin-03.mx.aol.com.: >>> DATA <<< 421-: (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html <<< 421 SERVICE NOT AVAILABLE ... while talking to mailin-02.mx.aol.com.: >>> DATA <<< 421-: (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html <<< 421 SERVICE NOT AVAILABLE <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aim.com> >... Deferred: 421-: (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html Warning: message still undelivered after 30 minutes Will keep trying until message is 6 hours old Error Message #2 The original message was received at Wed, 17 May 2006 15:18:35 +0530 from mail.pbcnet.com [127.0.0.1] ----- The following addresses had transient non-fatal errors ----- <amitmoduleone@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=amitmoduleone%40aim.com> > ----- Transcript of session follows ----- <amitmoduleone@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=amitmoduleone%40aim.com> >... Deferred: Connection reset by mailin-03.mx.aol.com. Warning: message still undelivered after 30 minutes Will keep trying until message is 6 hours old Error Message #3 The original message was received at Wed, 17 May 2006 14:56:32 +0530 from mail.pbcnet.com [127.0.0.1] ----- The following addresses had transient non-fatal errors ----- <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aim.com> > ----- Transcript of session follows ----- <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aim.com> >... Deferred: Connection reset by mailin-03.mx.aol.com. Warning: message still undelivered after 30 minutes Will keep trying until message is 6 hours old Error Message #4 The original message was received at Wed, 17 May 2006 14:52:01 +0530 from mail.pbcnet.com [127.0.0.1] ----- The following addresses had transient non-fatal errors ----- <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aol.com> > ----- Transcript of session follows ----- 451 4.4.1 reply: read error from mailin-02.mx.aol.com. 451 4.4.1 reply: read error from mailin-02.mx.aol.com. 451 4.4.1 reply: read error from mailin-03.mx.aol.com. 451 4.4.1 reply: read error from mailin-03.mx.aol.com. <smeattle@xxxxxxx <http://mail.pbcnet.com/src/compose.php?send_to=smeattle%40aol.com> >... Deferred: Connection reset by mailin-04.mx.aol.com. Warning: message still undelivered after 30 minutes Will keep trying until message is 6 hours old Please Help as we are facing this problem for a long time. -------- Amit Kapoor Network Engineer Module One India Ltd. Paharpur Software Technology Incubator Park A-88, Okhla Phase II, New Delhi 110020, India Tel: +91-(0)11-41859200 ext. 204 | Fax: +91-(0)11-41859220 E-mail: <mailto:amit@xxxxxxxxxxxxx> amit@xxxxxxxxxxxxx | Web: <http://www.moduleone.com/> www.moduleone.com ==== c r e a t i v e i n t e r n e t s o l u t i o n s ==== Module One, one of India's leading Interactive agencies, uses a combination of creative, marketing and technology skills to assist clients in successfully using the Internet for their marketing initiatives.