HELO issues

[ninji]

Steps To Reproduce

1. mail did not received by new user
2. changing SMTP server to our mail server shows HELO issues (see below)
3. outside the docker environment all FQDN are set, at self hosting server and in DNS
4. not sure when SMTP protocol is terminated
5. not sure if inside the docker the FQDN of sending server is known

Expected Result

BW sends fully-qualified hostname

Actual Result

May  7 16:44:45 mailservice5 postfix/submission/smtpd[481066]: NOQUEUE: reject_warning: RCPT from vault.i-telligence.de[*.*.*.*]: 504 5.5.2 <25aea30808b2>: Helo command rejected: need fully-qualified hostname; from=<no-reply@vault.i-telligence.de> to=<*.*@i-telligence.de> proto=ESMTP helo=<25aea30808b2>
May  7 16:44:45 mailservice5 postfix/submission/smtpd[481066]: NOQUEUE: reject: RCPT from vault.i-telligence.de[*.*.*.*]: 450 4.7.1 <25aea30808b2>: Helo command rejected: Host not found; from=<no-reply@vault.i-telligence.de> to=<*.*@i-telligence.de> proto=ESMTP helo=<25aea30808b2>
May  7 16:44:45 mailservice5 postfix/submission/smtpd[481066]: lost connection after RSET from vault.i-telligence.de[*.*.*.*]

it make not sense to hide ipaddress here, but hey ...

Screenshots or Videos

No response

Additional Context

No response

Build Version

bitwarden.sh version 2024.4.1, Docker version 24.0.5, build 24.0.5-0ubuntu1~20.04.1

Environment

Self-Hosted

Environment Details

Ubuntu 20.04

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.