Problems receiving mail in qmail
I can send email to client-x, but the client-x can't send us your email.
The client-x receive an email error with the following message:
"553 sorry, your HELO host name has been denied (#5.7.1)"
My mail server is qmail (1.03 version) on Red Hat Enterprise Linux Server release 5.
The client-x have Microsoft Exchange and Sophos Email Appliance
(http://sea.sophos.com/docs/esa/sea_docs/en/ The Email Appliance is an appliance for filtering email.)
The /var/qmail/control/badhelo file on my server doesn't have extdomain.com. For me, extdomain.com is not a badhelo.
Seven month ago I installed qmail-103.patch from http://www.ckdhr.com/ckd/qmail-103.patch
# patch -p1 < qmail-103.patch
# make setup check
I don't know if I need install another patch for qmail to resolve this problem.
I did the following test from my server :
[root@srv ~]# telnet mail.mydomain.com 25
Connected to mail.mydomain.com.
Escape character is '^]'.
220 mail.mydomain.com ESMTP
250 AUTH LOGIN PLAIN CRAM-MD5
RCPT TO:firstname.lastname@example.org NOTIFY=success,failure
553 sorry, your HELO host name has been denied (#5.7.1)
I omitted the real domains and IP addresses for confidentiality.
I can send to everybody emails, I can receive a lot of emails, but I can't receive emails from client-x.
Someone can give me an idea of what I should do.
Thanks so much.
This is probably caused by the Sophos email appliance, I have dealt with other Sophos products and they can be very restrictive. If I remember correctly, the Sophos email filter has a built in "Whitelist" which covers 99% of valid email usage, there are some clients and some servers that dont get picked up by it and will cause a rejection.
I think this may be apart of their anti-virus suite and not actually the email appliance. Are you running the sophos anti-virus as well? can you take a quick look at the sophos logs to see if it has anything about a rejection around the time the emails are being denied?
Thank you very much for your reply. I'll offer a bit more of details to be sure that we understand each other.
In my server, there are not any Sophos products. I currently use Spamassassin, and clamAV as anti-virus.
I cannot directly verify Sophos' logs, since they are in the client's server.
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