Hi!

Got a problem with Sendmail 8.13 running on FreeBSD 5.4:

I send email with attached 2Mb file from a client PC, my mail-server(BSD+Sendmail) queues it, and then while sending it I get such things in my /var/log/maillog:

Feb 17 16:37:57 mail sm-mta[77411]: k1HDbrnw077411: from=<me@mail.my.ru>, size=2362249, class=0, nrcpts=1, msgid=<200602171337.k1HDbrnw077411@my.ru>,
proto=ESMTP, daemon=IPv4, relay=me.dns.my.ru [12.2.11.13]
Feb 17 16:42:17 mail sm-mta[77413]: k1HDbrnw077411: to=<he@his.ru>, ctladdr=<me@mail.my.ru> (1017/0), delay=00:04:23, xdelay=00:04:20, mailer=esmtp, pr
i=2392249, relay=relay.his.ru. [197.13.198.14], dsn=4.0.0, stat=I/O error

While on the end of the recepient (Linux+postfix):

Feb 17 16:45:56 relay postfix/smtpd[11978]: connect from mail.my.ru[201.14.203.144]
Feb 17 16:45:56 relay postfix/smtpd[11978]: 6573A1FF005: client=mail.my.ru[201.14.203.144]
Feb 17 16:45:51 relay postfix/smtpd[11978]: lost connection after DATA from mail.my.ru[201.14.203.144]
Feb 17 16:45:51 relay postfix/smtpd[11978]: disconnect from mail.my.ru[201.14.203.144]

What can it be!?

Some details: 1) when I send a message without attach - everything is ok.
2) The precepient's PC is about 3 hops from my mail-server.

Thank you!