DNS issue

[Mohamed_kamal]

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 

[Bromont_FTNT]

Too many connections? Do you have lots of mail going there?

after the successful connection can you input "ehlo mail.elashrygroup.com" and see what the results are?

[Mohamed_kamal]

replay is 

mail # exec telnet  alt1.gmail-smtp-in.l.google.com:25

getaddrinfo error: Servname not supported for ai_socktype addr:alt1.gmail-smtp-in.l.google.com port:25exec

mail # ehlo mail.elashrygroup.com

Parsing error at 'ehlo'. err=1

Command failed(-284). Error string:

[Bromont_FTNT]

try "exec telnet smtp.fortinet.com" instead...once successfully connected try "ehlo mail.elashrygroup.com"

[Mohamed_kamal]

answered is 

Connection timed out in 30 seconds.

 

Connection status to smtp.fortinet.com port 23:

	Connecting to remote host failed

[emnoc]

b4 you do that, what  DNS server entries do you have in  the FML? It looks like your  DNS-servers applied to the FML are 1> wrong 2> block  ( fwpolicy  or lack of )  3> improper configurations

I believe you have a execute nslookup  of diag test command for testing DNS resolution via the cli cmd-line, try that 1st. If the FML can't resolve any host than your telnet will break and pretty everything else  that relies on DNS.

[Mohamed_kamal]

DNS is 8.8.8.8 & 4.2.2.3

[Bromont_FTNT]

sorry... forgot to put the :25 in there....

exec telnet smtp.fortinet.com:25

or 

exec smtptest smtp.fortinet.com

[Mohamed_kamal]

exec telnet smtp.fortinet.com:25

Connected

 

421 service not available (connection refused, too many connections)

 

Entering interactive mode. Type CTRL-D to exit.

Connection closed.

 

Connection status to smtp.fortinet.com port 25:

	Connecting to remote host succeeded.

another command is a same answer 

[Bromont_FTNT]

you must be having network issues or something else proxying your smtp traffic

[Mohamed_kamal]

ok i have firewall fortigate 200d can u help me to fix this issue ?