sendmail does not work / doesn't use FROM parameter

[DeveloperOl]

• Gitea version (or commit ref): 1.10.1
• Git version: 2.11.0
• Operating system: Raspbian / Debian 9 (Stretch)
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

I tried to setup email notifications with postfix sendmail using the following config:

ENABLED = true
FROM = My Gitea <noreply@gitea.[mydomain].io>
MAILER_TYPE = sendmail

[mydomain] is replaced with a valid domain.

But when I send a test mail postfix logs this:

Dec 17 14:44:19 RaspberryPi postfix/cleanup[3590]: 6246C1006F3: message-id=<20191217134419.6246C1006F3@mail.[mydomain].io>
Dec 17 14:44:19 RaspberryPi postfix/qmgr[3499]: 6246C1006F3: from=<git@notification@RaspberryPi.com>, size=899, nrcpt=1 (queue active)
Dec 17 14:44:19 RaspberryPi postfix/smtp[3592]: 6246C1006F3: to=<[anonymized]@gmail.com>, relay=gmail-smtp-in.l.google.com[108.177.126.27]:25, delay=0.57, delays=0.1/0.03/0.43/0.01, dsn=5.1.7, status=bounced (host gmail-smtp-in.l.google.com[108.177.126.27] said: 553-5.1.7 The sender address <git@notification@raspberrypi.com> is not a valid 553 5.1.7 RFC-5321 address. v25si7275410edq.184 - gsmtp (in reply to MAIL FROM command))
Dec 17 14:44:19 RaspberryPi postfix/cleanup[3590]: EF6DA100746: message-id=<20191217134419.EF6DA100746@mail.[mydomain].io>
Dec 17 14:44:20 RaspberryPi postfix/bounce[3593]: 6246C1006F3: sender non-delivery notification: EF6DA100746
Dec 17 14:44:20 RaspberryPi postfix/qmgr[3499]: EF6DA100746: from=<>, size=3248, nrcpt=1 (queue active)
Dec 17 14:44:20 RaspberryPi postfix/qmgr[3499]: 6246C1006F3: removed
Dec 17 14:44:20 RaspberryPi postfix/smtp[3592]: EF6DA100746: to=<git@notification@RaspberryPi.com>, relay=none, delay=0.13, delays=0.03/0.01/0.1/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=raspberrypi.com type=AAAA: Host not found)
Dec 17 14:44:20 RaspberryPi postfix/qmgr[3499]: EF6DA100746: removed

and I don't receive an email. I can see that my configured FROM = My Gitea <noreply@gitea.[mydomain].io> is not beeing used and therefore the email gets rejected by gmail.
The sendmail works fine for my nextcloud setup

[zeripath]

Looking at the code it certainly appears to set it.

gitea/modules/setting/mailer.go

Line 74 in 590d56d

MailService.From = sec.Key("FROM").MustString(MailService.User)

gitea/modules/setting/mailer.go

Lines 88 to 97 in 590d56d

	parsed, err := mail.ParseAddress(MailService.From)
	if err != nil {
	log.Fatal("Invalid mailer.FROM (%s): %v", MailService.From, err)
	}
	MailService.FromName = parsed.Name
	MailService.FromEmail = parsed.Address
	if MailService.MailerType == "" {
	MailService.MailerType = "smtp"
	}

And use it:

gitea/services/mailer/mailer.go

Line 67 in 590d56d

return NewMessageFrom(to, setting.MailService.FromName, setting.MailService.FromEmail, subject, body)

gitea/services/mailer/mail.go

Line 246 in 08ae6bb

msg := NewMessageFrom([]string{to}, ctx.Doer.DisplayName(), setting.MailService.FromEmail, subject, mailBody.String())

Used here:

gitea/services/mailer/mailer.go

Line 39 in 590d56d

msg.SetAddressHeader("From", fromAddress, fromDisplayName)

Leading to:

gitea/services/mailer/mailer.go

Line 216 in 590d56d

args := []string{"-F", from, "-i"}

Try setting the MAILER_TYPE=dummy just to ensure that the from address is being parsed correctly.

If that is correct then we need to think a bit more about where it could be going wrong.

[DeveloperOl]

@zeripath using "dummy" as MAILER_TYPE results in the expected result:

	From: "My Gitea" <noreply@gitea.[mydomain].io>\01503d
	To: [anonymized]@gmail.com\01503d
	Subject: Gitea Test Email!\01503d
	Date: Thu, 19 Dec 2019 11:51:36 +0100\01503d
	X-Auto-Response-Suppress: All\01503d
	Content-Type: multipart/alternative;\01503d
	 boundary=96fa55d689ea616bc3979cbf55f1f74f14c7cd681734450a819b58124e80\01503d
	\01503d
	--96fa55d689ea616bc3979cbf55f1f74f14c7cd681734450a819b58124e80\01503d
	Content-Transfer-Encoding: quoted-printable\01503d
	Content-Type: text/plain; charset=UTF-8\01503d
	\01503d
	Gitea Test Email!\01503d
	--96fa55d689ea616bc3979cbf55f1f74f14c7cd681734450a819b58124e80\01503d
	Content-Transfer-Encoding: quoted-printable\01503d
	Content-Type: text/html; charset=UTF-8\01503d
	\01503d
	Gitea Test Email!\01503d
	--96fa55d689ea616bc3979cbf55f1f74f14c7cd681734450a819b58124e80--\01503d

I have narrowed the error down to the parameter -F.
using echo "Subject: sendmail test" | sendmail -F "My Gitea <noreply@gitea.[mydomain].io>" -v "[anonymized]@gmail.com" does not work and results in from=<git@notification@RaspberryPi.com> beeing used by sendmail. Using the parameter -f (Subject: sendmail test" | sendmail -f "My Gitea <noreply@gitea.[mydomain].io>" -v "[anonymized]@gmail.com" fixes my issue.