We are not receiving attachments sporadically from some of our clients but we are not receiving any emails with attachments from gmail. Here is a copy of our most recent smtp log.
13:22:02 [72.14.220.157][53190908] rsp: 220 mail.adomain.com
13:22:02 [72.14.220.157][53190908] connected at 10/6/2008 1:22:02 PM
13:22:02 [72.14.220.157][53190908] cmd: EHLO fg-out-1718.google.com
13:22:02 [72.14.220.157][53190908] rsp: 250-mail.simplyresults.com Hello [72.14.220.157] 250-SIZE
1895825408 250-AUTH LOGIN CRAM-MD5 250 OK
13:22:02 [72.14.220.157][53190908] cmd: MAIL FROM:<email@adomain.com>
13:22:02 [72.14.220.157][53190908] rsp: 250 OK <email@adomain.com> Sender ok
13:22:02 [72.14.220.157][53190908] cmd: RCPT TO:<email@adomain.com>
13:22:02 [72.14.220.157][53190908] rsp: 250 OK <email@adomain.com> Recipient ok
13:22:02 [72.14.220.157][53190908] cmd: DATA
13:22:02 [72.14.22013:26:35 [72.14.220.157][53190908] rsp: 421 Command timeout, closing transmission
channel
13:26:35 [72.14.220.157][53190908] data transfer failed.
13:26:35 [72.14.220.157][53190908] disconnected at 10/6/2008 1:26:35 PM.157][53190908] rsp: 354 Start
mail input; end with <CRLF>.<CRLF>
13:15:38 [72.14.220.152][43165309] rsp: 220 mail.adomain.com
13:15:38 [72.14.220.152][43165309] connected at 10/6/2008 1:15:38 PM
13:15:38 [72.14.220.152][43165309] cmd: EHLO fg-out-1718.google.com
13:15:38 [72.14.220.152][43165309] rsp: 250-mail.adomain.com Hello [72.14.220.152] 250-SIZE
1895825408 250-AUTH LOGIN CRAM-MD5 250 OK
13:15:38 [72.14.220.152][43165309] cmd: MAIL FROM:<email@adomain.com>
13:15:38 [72.14.220.152][43165309] rsp: 250 OK <email@adomain.com> Sender ok
13:15:38 [72.14.220.152][43165309] cmd: RCPT TO:<email@adomain.com>
13:15:38 [72.14.220.152][43165309] rsp: 250 OK <email@adomain.com> Recipient ok
13:15:38 [72.14.220.152][43165309] cmd: DATA
13:15:38 [72.14.220.152][43165309] rsp: 354 Start mail input; end with <CRLF>.<CRLF>
13:22:45 [72.14.220.152][43165309] rsp: 421 Command timeout, closing transmission channel
13:22:45 [72.14.220.152][43165309] data transfer failed.
13:22:45 [72.14.220.152][43165309] disconnected at 10/6/2008 1:22:45 PM
I have disabled the antispam and antivirus to see if that is the issue but nothing has worked. Any ideas?