SMTP credentials wrong after changing a field in outbound email settings #5363

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opened 2026-02-20 17:00:12 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-20 17:00:12 -05:00

Owner

Originally created by @BastianHammer on GitHub (Jan 24, 2026).

Issue

Without changing username or password (or anything important related to the SMTP connection), after re-saving the outbound mail record I can't send out mails anymore.

First it works after testing / sending the SMTP record.
With that:

I assumed, I can change the name / signature without entering the password again.

However, after saving a new signature, the SMTP doesn't work anymore:

3: Connection: opening to ssl://smtp.domain.com:465, timeout=300, options=array()
3: Connection: opened
2: SERVER -> CLIENT: 220 domain.com (usr106) Nemesis ESMTP Service ready

1: CLIENT -> SERVER: EHLO suitecrm892.demo

2: SERVER -> CLIENT: 250-web.de Hello suitecrm892.demo [89.244.94.37]
250-8BITMIME
250-AUTH PLAIN LOGIN
250 SIZE 141557760

1: CLIENT -> SERVER: AUTH LOGIN

2: SERVER -> CLIENT: 334 VXNlcm5hbWU6

1: CLIENT -> SERVER: ---obfuscated---
2: SERVER -> CLIENT: 334 UGFzc3dvcmQ6

1: CLIENT -> SERVER: ---obfuscated---
2: SERVER -> CLIENT: 535 Authentication credentials invalid

1: SMTP ERROR: Password command failed: 535 Authentication credentials invalid

3: SMTP Error: Could not authenticate.
1: CLIENT -> SERVER: QUIT

2: SERVER -> CLIENT: 221 domain.com Service closing transmission channel

3: Connection: closed
3: SMTP Error: Could not authenticate.

Possible Fix

No response

Steps to Reproduce the Issue

1. I've setup an (SMTP) outbound email account and everything works fine.
2. Then I'll change sth. like the name of the record or the signature
3. Afterwards SMTP won't work anymore

Context

No response

Version

8.9.2

What browser are you currently using?

Chrome

Browser Version

No response

Environment Information

MariaDB, PHP8.3

Operating System and Version

Ubuntu 24

Originally created by @BastianHammer on GitHub (Jan 24, 2026). ### Issue Without changing username or password (or anything important related to the SMTP connection), after re-saving the outbound mail record I can't send out mails anymore. First it works after testing / sending the SMTP record. With that: <img width="529" height="109" alt="Image" src="https://github.com/user-attachments/assets/9869fe20-bd81-4209-ad5f-6c2de19e05a5" /> I assumed, I can change the name / signature without entering the password again. However, after saving a new signature, the SMTP doesn't work anymore: <img width="968" height="259" alt="Image" src="https://github.com/user-attachments/assets/76f6a61a-0d49-4fde-929e-036e62e21bab" /> ``` 3: Connection: opening to ssl://smtp.domain.com:465, timeout=300, options=array() 3: Connection: opened 2: SERVER -> CLIENT: 220 domain.com (usr106) Nemesis ESMTP Service ready 1: CLIENT -> SERVER: EHLO suitecrm892.demo 2: SERVER -> CLIENT: 250-web.de Hello suitecrm892.demo [89.244.94.37] 250-8BITMIME 250-AUTH PLAIN LOGIN 250 SIZE 141557760 1: CLIENT -> SERVER: AUTH LOGIN 2: SERVER -> CLIENT: 334 VXNlcm5hbWU6 1: CLIENT -> SERVER: ---obfuscated--- 2: SERVER -> CLIENT: 334 UGFzc3dvcmQ6 1: CLIENT -> SERVER: ---obfuscated--- 2: SERVER -> CLIENT: 535 Authentication credentials invalid 1: SMTP ERROR: Password command failed: 535 Authentication credentials invalid 3: SMTP Error: Could not authenticate. 1: CLIENT -> SERVER: QUIT 2: SERVER -> CLIENT: 221 domain.com Service closing transmission channel 3: Connection: closed 3: SMTP Error: Could not authenticate. ``` ### Possible Fix _No response_ ### Steps to Reproduce the Issue ```bash 1. I've setup an (SMTP) outbound email account and everything works fine. 2. Then I'll change sth. like the name of the record or the signature 3. Afterwards SMTP won't work anymore ``` ### Context _No response_ ### Version 8.9.2 ### What browser are you currently using? Chrome ### Browser Version _No response_ ### Environment Information MariaDB, PHP8.3 ### Operating System and Version Ubuntu 24

deekerman added the

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2026-02-20 17:00:12 -05:00

deekerman commented

2026-02-20 17:00:13 -05:00

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@wprauchholz commented on GitHub (Jan 28, 2026):

I changed the password now several times with and without special characters.
Behaviour is always the same.
What is interesting though is that the emsil/password setting for the inbound email seems to be stable

@wprauchholz commented on GitHub (Jan 28, 2026): I changed the password now several times with and without special characters. Behaviour is always the same. What is interesting though is that the emsil/password setting for the inbound email seems to be stable