Problem con correo

[leioa]

A Q PUEDE DEBERSE ESTE MENS D ERROR ???

Action: failed
Status: 5.0.0
Diagnostic-Code: smtp;550 DATA line too long (Max 1024)
.<CRLF>
tensions (SIZE=6573) Ok
N
250-SIZE 10485760
250-AUTH PLAIN LOGIN
250 AUTH=LOGIN
V04.50c++
250 XMVP 2
no reverse-DNS (PTR record) assigned.
addresses which
220 have no reverse-DNS (PTR record) as
ions from IP addresses which
220 have no reverse-DNS (PTR record) assigned.

ipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
250 2.1.5 <[email protected]>... Recipient ok
550 5.1.1 <[email protected]>... No such user
250 2.1.5 <[email protected]>... Recipient ok
550 5.1.1 <[email protected]>... No such user
250 2.1.5

[talyes]

mmm q es lo q te da ese msg de error?

[leioa]

se lo da a un amigo mio q intenta mandarme un correo desde hotmail a mi cuenta no hotmail.
Pero el no tiene ningun problema para mandar otros correos
Ni yo tampoco para recibir de otras personas.
Tampoco es un problema de dircc erronea, xq si recibo emails suyos de 1 a 4 kb.
Nos ocurre cuando me envia mensajes de 5 kb o mas.
Pero no es debido a saturacion de mi cuenta.
Q puede ser?

GRACIAS