On 8/5/05 2:52 AM, Peter Farrow wrote: > Dear All, > > I have two machines, a Centos 3.4 machine and a Centos 4.1 machine. > I have used the same sendmail.mc file on each, and 3.4 machine does > plain SMTP auth with no problems, compiling the same mc file on the 4.1 > machine gives this error: > > xxxxx [x.x.x.x] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA I usually see that message when the SSL/TLS handshake failed in some way. Can you get a good connection to sendmail using openssl? # openssh s_client -connect your.mail.host:25 -starttls smtp > It reports this from the EHLO so all looks good: > 250-ENHANCEDSTATUSCODES > 250-PIPELINING > 250-8BITMIME > 250-SIZE > 250-DSN > 250-ETRN > 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN PLAIN > 250-DELIVERBY > 250 HELP Hmm. It'd be helpful to know your authentication chain: 1. The contents of /usr/lib/sasl2/Sendmail.conf 2. The contents of $MECH in /etc/sysconfig/saslauthd Also, is saslauthd running? -- Paul Heinlein <> heinlein@xxxxxxxxxx <> www.madboa.com