Can anyone help me with this one? This address has bounced mail for weeks and weeks. Yet I regularly write directly to the addresse, asking if his technical people have solved the problem. Any advice would be welcome. Thanks, Hardy M. Cook SHAKSPER Subject: mail delivery error Batch SMTP transaction log follows: 220 vm.utcc.utoronto.ca Columbia MAILER R2.10 ptf000 BSMTP service ready. 050 HELO vm.utcc.utoronto.ca 250 vm.utcc.utoronto.ca Hello vm.utcc.utoronto.ca 050 TICK 2206 250 2206 ... that's the ticket. 050 MAIL FROM:<[log in to unmask]> 250 <[log in to unmask]>... sender OK. 050 RCPT TO:<[log in to unmask]> 250 <[log in to unmask]>... recipient OK. 050 RCPT TO:<[log in to unmask]> 250 <[log in to unmask]>... recipient OK. 050 DATA 354 Start mail input. End with <crlf>.<crlf> 554 Mail aborted. Maximum hop count exceeded. 050 QUIT 221 vm.utcc.utoronto.ca Columbia MAILER BSMTP service done.