Hello all,
I have been using XMAIL Server for sometime now and have recently had several
complaints from end users regarding 550 errors.
In a nutshell, the users sent an email (with 2 word attachments) out to a
distribution list of about 20 people. No errors.
About 7 minutes later, they sent an email (with 2 word attachments) to the
same distribution list and got 10 550 errors.
This is not the only instance of this - it is in fact rather common.
I do not think this is a config. problem and have verified the following:
The recipient's SMTP blocks your mail because one of these reasons:
- Your HeloDomain in server.tab is no real domain name
***domain is identified
- You run XMail from a dynamic IP address range
***No
- You are in a cable modem IP range
***No
- Your SMTP is an open relay
***No
- You or your ISP are blacklisted by an antispam database.
In that case search the SLOG for details about the blacklisting
service and see if it is possible to clear your entry from that list.
***No
Any help is appreciated.
-Vijay
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