-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 At 07:41 AM 1/18/2002, you wrote: >http://www.ISAserver.org > > >I'm working with the ISA QFE team to solve this. >1. How were you able to determine that Postfix mailservers were the problem? >2. Do you have any packet traces to share with us (NDA applies, of course)? I have not been able to get packet traces yet (production box and don't want to turn SMTP filter back on) but I had problems getting any mail at all from Domino servers this morning- the sender received the following error: >SMTP Protocol Returned a Permanent Error 500 5.3.3 Unrecognized command Turning off the filter fixed it. Good luck! -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQA/AwUBPEhdsohsmyD15h5gEQJIZwCfXlGO4Y09n1L7++/LwKNUbqbqdu0AoPZ0 twnwRPFTTO4XvmdkHWv2DO4q =4DNo -----END PGP SIGNATURE-----