We can read messages fine, but when we send, the messages just disappear into the ether. I've read that other people have had a similiar problem, but could not find an answer. Software List: Linux kernel 2.2.16 suse 7.0 qmail courier imap postgresql 7 apache 1.3 mod php 3.1.1? horde 1.2.3 imp 2.2.3