Alan, I got no startup errors in the SMTP Log.
I tried the statement as you have advised: IPMAILERADDRESS ALL 1.2.3.4 same result. See part of the log below. I only restarted the SMTP-Server. Should I also restart the associated TCP/IP stack ? Kind regards Ewald Roller DTCRUN1022I Console log will be sent to default owner ID: TCPMAINT DTCRUN1027I Server will use TcpipUserid TCPIP02 DTCRUN1011I Server started at 17:01:36 on 21 Jul 2011 (Thursday) DTCRUN1011I Running server command: SMTP DTCRUN1011I No parameters in use ========================= ========================= ================ IBM VM SMTP Level 540 on Thu, 21 Jul 2011 17:01:36 UTC Service Level : PK75688 Userid of SMTP Virtual Machine : SMTP02 TCP Host Name : ZVM02 TCP Network Domain Name : ROLF-BENZ.DE Gateway TCP Network to RSCS : No Port for Server SMTP : 25 Mail Hop Count : 25 Number of files per connection : 5 Maximum connections per site : 10 Return mail older than : 3 days Warn about mail older than : 1 days Max Length of Accepted Mail : 524288 bytes Max Temporary Error Retries : Disabled Name Resolution Method : Nameserver, Port 53 Secondary Name Resolution : NONE Nameserver Address(.1.) : a.b.c.d ... Deliver via Mailer : None IP Mailer Address/Hostname : 10.85.64.21 IP Mailer ALL enabled : No