https://knowledge.broadcom.com/external/article/177312/how-to-change-the-hostname-displayed-dur.html
How to change the hostname displayed during the EHLO command
how to changehostnamedisplayedehlocommand
https://community.bitdefender.com/en/discussion/74543/ehlo-not-working-through-frams/p1
ehlo not working through frams - Expert Community
Hello, I have installed FRAMS on a fedora 25 server, I can telnet to my exchange 2010 server just fine through the FRAMS server, but when I type ehlo I get 501...
not workingehloframsexpertcommunity
https://techcommunity.microsoft.com/blog/exchange/special-invitation-for-ehlo-readers-to-the-e12-developer-conference/607988
Special invitation for EHLO readers to the E12 Developer Conference! | Microsoft Community Hub
Jul 1, 2019 - On November 7th and 8th 2005, we will be holding a Developer Conference on campus in Redmond WA that is targeted to our key Exchange ISV and Developer...
https://www.wyrihaximus.net/
EHLO | WyriHaximus.net
ehlo
https://www.trendmicro.com/en_gb/research/19/j/cve-2019-16928-exploiting-an-exim-vulnerability-via-ehlo-strings.html
CVE-2019-16928: Exim Vuln Exploit via EHLO Strings | Trend Micro (UK)
Oct 10, 2019 - Researchers found CVE-2019-16928, a vulnerability in mail transfer agent Exim. Exim accounts for over 50% of publicly reachable mail servers online, and threat...
https://www.ibm.com/docs/en/db2/12.1.x?topic=usm-ehlo-procedure-perform-initial-handshaking-smtp-server-return-extended-information
EHLO procedure - Perform initial handshaking with an SMTP server and return extended information
The EHLO procedure performs initial handshaking with the SMTP server after establishing the connection.
https://meta.discourse.org/t/discourse-smtp-sends-ehlo-localhost-instead-of-domain-breaking-google-smtp-relay/176755?tl=en
Discourse SMTP sends "EHLO localhost" instead of domain, breaking Google smtp-relay - Bug -...
Jan 20, 2021 - Some context here: https://meta.discourse.org/t/emails-have-stopped-sending-end-of-file-error/176486 Roughly a week ago (Jan 13, 2021), emails started failing...
https://knowledge.broadcom.com/external/article/279381/notification-email-fails-to-be-sent-out.html
Notification email fails to be sent out with an error "550.5.5.0 Invalid EHLO/HELO domain"
https://community.f5.com/discussions/technicalforum/need-help-blocking-smtp-connections-based-off-ehlo-name/35652/replies/35653
Need help blocking SMTP connections based off EHLO name | DevCentral
I keep getting attacked from this stupid spam bot script kiddie. The script is going to our SMTP server and is trying to guess a bunch of typical email...
need helpblockingsmtpconnectionsbased