----------------------------Original message---------------------------- I have been getting several requests per day from this person - commands always correct but return address unknown. I've tried writing to both the user and to 'postmaster' at MOBITEL.TELIA.SE and TELIA.SE but all attempts bounce. Anyone have a suggestion ??? TIA - mike * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Subject: Undeliverable Mail UACSC2.ALBANY.EDU unable to deliver following mail to recipient(s): <[log in to unmask]> 550 Host 'SPARCY.MOBITEL.TELIA.SE' Unknown < command output deleted >