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DNS issue
i have fortimail 200d and fortigate 200D
when i send any mail replay me postmaster is (reason: 550 *** The HELO for IP address 41.38.52.75 was '[41.38.52.75]' (valid but not recommended syntax )
i contact with senderbase team to know why added my IP to blacklist and replay me that
To this end, we are seeing reports of HELO strings which do not match the PTR / rDNS of the IP. One of the HELO string we are seeing “[41.38.52.75]” which is not exact matches to the PTR of the IP 41.38.52.75 (mail.elashrygroup.com).
how to resolve ip to HELO ?
please help me
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for the telnet test try:
exe telnet alt1.gmail-smtp-in.l.google.com:25
then type
ehlo mail.elashrygroup.com
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This t-shooting 101, but here the 2x types of hello ( normal and extended aka EHLO )
Your hostname present needs to match DNS. if that matches, than you can go down the list of the next items;
[ul]
http://socpuppet.blogspot...ng-blocked-on-rbl.html
PCNSE
NSE
StrongSwan
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FWIW, your not on any common RBLs
http://www.anti-abuse.org/multi-rbl-check-results/?host=mail.elashrygroup.com
PCNSE
NSE
StrongSwan
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how to create best SPF record ?
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SPF record is a TXT entry in DNS for your domain.
According to your config your MTA helo/ehlo looks ok....
Are you sure you can't run:
exec telnet alt1.gmail-smtp-in.l.google.com:25
and:
ehlo mail.elashrygroup.com
Would like to see the results of the above command.
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gmail is
421 service not available (connection refused, too many connections)
Entering interactive mode. Type CTRL-D to exit.
Connection closed.
Connection status to alt1.gmail-smtp-in.l.google.com port 25:
Connecting to remote host succeeded.
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421 error appeared with mails at tab mail queue