I run my own SMTP server which delivers email directly to the receipient. Over the last few days, I am noticing that my emails are not delivered properly. Many of them bounce, some of them simply queue up and refuse to go out of the queue. After some investigation, I found that the IP address that BSNL gives me (dynamically from a pool of addresses) have all been black listed. It could be that afew of the users of the ISP had a virus on their machine which sent out automatic emails and clogged other networks which forced the IP to be black listed or probably some one is actually sending out spam.
I have tried removing the IP from spamhaus, but invariably the next time, I get the same or another IP which is in CBL.
I do not know how to escape from this problem. If anyone can give me a solution, I will be grateful.
One Comment
Hey,
The reverse dns of the dynamic IP that gets assigned to u everytime has a name something like suggesting its a dynamic IP / home IP . So, the reverse dns records of ur IP must be changed such that it bears the domain name , which is in the “Mail From” tag in ur email. But, in ur case since its a dynamic IP that changes everytime, u cant do a smtp relay unles u get a static IP assigned to u everytime, and its dns and reverse dns are pointed accordingly with ur email domain name.
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