On a 1&1 shared hosting, I'm using
mail(...); from a PHP script (which itself calls
/usr/sbin/sendmail -t -i) and finally I get an error message (see below).
More or less my mail (I send less than 5 mails per day) is considered as spam by SORBS. It's not spam (it is usually an important mail to a customer with their download link after a purchase) nor a virus.
I'm having a nightmare since days to solve this problem.
- what is the flow diagram of my email ?
local PHP ==> local
sendmail ==> ... ? SORBS ? ==> recipient server ? => error message? (who sends it? sorbs or recipient or local sendmail?)
where is SORBS working in this story ? By my shared hosting (1&1)? Somewhere in the middle? By who is this service called? By the recipient's server?
how to typically solve such problems? SORBS seems to be difficult to reach (no phone, difficult to contact support via email, etc.) and very opaque
Note: I've asked SORBS for delisting, but the problem continues.
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
email@example.com: SMTP error from remote server for RCPT TO command, host: mail.forwarder.lexsynergy.com (212.20.251.xx) reason: 550-212.227.126.xx is listed at dnsbl.sorbs.net (127.0.0.xx, 127.0.0.xx: 550 Virus Transmitting Server See: http://www.sorbs.net/lookup.shtml?212.227.126.xx)
--- The header of the original message is following. ---
Received: from xx.kundenserver.de (infong1124.kundenserver.de [212.227.18.xx]) by mrelayeu.kundenserver.de (node=mreue006) with ESMTP (Nemesis) id 0LzUX8-1b2ynI3IFW-014gcV; Tue, 06 Sep 2016 14:34:58 +0200 Received: from 188.8.131.52 (IP may be forged by CGI script) by icpu2490.kundenserver.de with HTTP id 4AibFb-1bfKiR2kcj-002Zae; Tue, 06 Sep 2016 14:34:58 +0200 X-Sender-Info: xxx