problem with recive mail from gmx

[Dörfler Andreas]

hi there,

since nearly 1 month i get the folling errors from GMX senders:

g 30 07:30:51 srv sendmail-in[21651]: k7U5UpY6021651: collect: premature EOM: Connection reset by mail.gmx.de
Aug 30 07:30:51 srv sendmail-in[21651]: k7U5UpY6021651: SYSERR(root): collect: I/O error on connection from mail.gmx.de, from=<R E M O V E D 02050807 at gmx.de>
Aug 30 07:47:38 srv sendmail-in[22449]: k7U5lbxl022449: collect: premature EOM: Connection reset by mail.gmx.de
Aug 30 07:47:38 srv sendmail-in[22449]: k7U5lbxl022449: SYSERR(root): collect: I/O error on connection from mail.gmx.de, from=<R E M O V E D 02050807 at gmx.de>
Aug 30 07:58:04 srv sendmail-in[23060]: k7U5w3bk023060: collect: premature EOM: Connection reset by mail.gmx.net
Aug 30 07:58:04 srv sendmail-in[23060]: k7U5w3bk023060: SYSERR(root): collect: I/O error on connection from mail.gmx.net, from=<R E M O V E D 02050807 at gmx.de>

i get theses errors not from all gmx senders, only from a few, but this few always the same, so they cant send
mails to us.

i got some funny contact with gmx first level support, told me thats
an dns (reverse dns check) error but fact is: its NOT a dns error.
first lvl support ....

at the moment i have no idea what i can do because:

- its only a gmx problem
- its only from a few gmx senders, not all
- when i try to send to gmx accounts everthing fine
- gmx support cant/wont help me

any ideas ?
anyone the same problem ?

greetings
andy

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