Zitat von c cc <sub...@gmail.com>:
Hi,
All of the sudden, we can't send any email to one particular domain, and
below is the error message we got. Does anyone have any idea how to fix
this problem? Thanks!
Charles
------------------------------------------------------------
This is the mail system at host es1.mydomain.com.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<myn...@mail.xxdomain.com>: connect to
xxdomain.com[2607:f220:404:8104::80e7:5a78]:25: Network is
unreachable
Looks like your IPv6 connectivity is broken. Works from here: telnet -6 nihcesxway5.hub.nih.gov 25 Trying 2607:f220:404:8104::80e7:5a78... Connected to nihcesxway5.hub.nih.gov. Escape character is '^]'. 220 nihcesxway5.hub.nih.gov ESMTP quit 221 nihcesxway5.hub.nih.gov Connection closed by foreign host. But not really fast, though.Either way there are some other MXs as far as i see so your mail should get through (later).
Regards Andreas
smime.p7s
Description: S/MIME Cryptographic Signature
