SMTP Topic: SMTP
I am hosting my own email server. It can receive mail on port 25, but unfortunately my ISP blocks sending on that port. so I chose your "SMTP Outbound Relay" service, which I use on port 26. it works, but then I can no longer send mail. How can I resolve this issue? Should I change my service from Dynu or is it a configuration issue?
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If its like my ISP, they block port 25 is both directions, except to their SMTP server.
On my mail server I have a "Smart Host / Outbound Mail Gateway" configured that point to the ISP's mail server and it relays all my email. It does require a login, but is transparent to your domain email addresses.
Basically you have to SMTP relay in (Dynu) and SMTP relay out (Your ISP SMTP server).
On my mail server I have a "Smart Host / Outbound Mail Gateway" configured that point to the ISP's mail server and it relays all my email. It does require a login, but is transparent to your domain email addresses.
Basically you have to SMTP relay in (Dynu) and SMTP relay out (Your ISP SMTP server).
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fredricmichaels Joined: 2020/2/19 
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SMTP 2020年2月20日星期四 下午11:00
I am hosting my own email server. It can receive mail on port 25, but unfortunately my ISP blocks sending on that port. so I chose your "SMTP Outbound Relay" service, which I use on port 26. it works, but then I can no longer send mail. How can I resolve this issue? Should I change my service from Dynu or is it a configuration issue?
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grahamxpromz Joined: 2015/4/13 
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SMTP 2020年4月9日星期四 下午10:06
If its like my ISP, they block port 25 is both directions, except to their SMTP server.
On my mail server I have a "Smart Host / Outbound Mail Gateway" configured that point to the ISP's mail server and it relays all my email. It does require a login, but is transparent to your domain email addresses. Basically you have to SMTP relay in (Dynu) and SMTP relay out (Your ISP SMTP server). |
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mahmoudlotfy2 Joined: 2019/8/26 
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SMTP 2020年7月29日星期三 上午3:26
I do not know how to receive any outside inclination.
what should I do ? |
It is currently 2026年6月13日星期六 下午12:07 US Mountain Standard Time
2026年6月13日星期六 下午12:07