474B06D9A4 44014 Tue May 2 14:14:16 user1@domain.ru (conversation with mx1.mail.yahoo.com[4.79.181.15] timed out while sending message body) user1@yahoo.com
631A46DA42 99151 Tue May 2 14:25:02 user2@domain.ru (conversation with mx3.mail.yahoo.com[4.79.181.12] timed out while sending message body) user2@yahoo.com
а чем может быть проблема?
ps: postfix mta.