# telnet 217.207.22.163 25 Trying 217.207.22.163... Connected to hippo.mlmuk.com. Escape character is '^]'. 220 hippo.mlmuk.com ESMTP Postfix - ATTN: UCE Trespassers will be pursued helo this.is.len 250 hippo.mlmuk.com mail from:<[EMAIL PROTECTED]> 250 Ok rcpt to:<[EMAIL PROTECTED]> 250 Ok quit 221 Bye Connection closed by foreign host.
btw, the A + PTR records match for .163, but the SMTP greeting is different. PTR = A = STMP greeting = HELO hostname is best practice. Len
