The right answer is to firewall all incoming and outgoing mail from
Hotmail, until they fix their mail server to comply with RFC 821.
Unfortunately, it's not my local server, it's a client's.
Is this too insane? I liked it better than some RELAYCLIENT =
"@hotmail-fixup" in tcprules as that causes every message to be handled,
logged twice, etc.
Here's my end run of qmail and hotmail to handle this:
control/virtualdomains:
hotmail.com:alias-hotmail
alias/.qmail-hotmail-default:
# this bounces messages that are too big for buggy hotmail servers
|/var/qmail/bin/bounceonfilesize
# slight-of-hand to name service hotmail.com looks up to hotmail.com.
# but apparently not in virtual domains, which actually is cool for us
# doesn't affect incoming smtp stuff, only local outgoing, which is
# perfect
|/var/qmail/bin/forward "$DEFAULT"@hotmail.com.
bounceonfilesize.c:
#include sys/types.h
#include sys/stat.h
#include stdlib.h
#include string.h
#define die(str,code) { puts( str ) ; exit( code ) ; }
#define HOTMAILSIZELIMIT 1048576
extern int errno;
int main(void) {
struct stat sb ;
if ( fstat( 0, sb ) != 0 )
die( strerror(errno), 111 ) ;
if ( ! (sb.st_mode S_IFREG) )
die( "stdin is not attached to a regular file", 111 ) ;
if ( sb.st_size = HOTMAILSIZELIMIT )
die( "This message exceeds hotmail.com limits.", 100 ) ;
exit( 0 ) ;
}
